Raypak MVB 5042004 User Manual

INSTALLATION & OPERATING

INSTRUCTIONS

Models 504–2004

Types H, WH, P & WHP

WARNING: Improper installation, adjustment, alteration, service or maintenance can

cause property damage, personal injury, exposure to hazardous materials* or loss of life. Review the information in this manual carefully. *This unit contains materials that have been identified as carcinogenic, or possibly carcinogenic, to humans.

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and liquids or other combustible materials in the vicinity of this or any other appliance. To do so may result in an explosion or fire.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.

• If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

This manual should be maintained in legible condition and kept adjacent to the heater or in a safe place for future reference.

CATALOG NO. 3400.54E Effective: 03-25-10 Replaces: 03-19-09 P/N 241317 Rev. 6

Rev. 5 reflects the following: Changes to: Air Filter instructions on page 11, minor text changes on pages 13 and 14, Figs. 10 and 11 on page 15,. Fig 12

and Table G on page 16, Fig 13 on page 17, minor text changes on page 20, Fig. 21 on page 22, Figs. 22-28 on pages 2530, Table N on page 29, Fig. 35 on page 32, Mode 8 description on page 33, minor text changes on pages 42, 43 and 46, Troubleshooting chart on page 48. Additions: Fig. 2 on page 6, Low-lead requirement on page 5, Fig. 8 on page 11, note on page 12, Caution on page 20, Fig. 22 on page 22, Fig. 36 on page 33, air filter instructions on pages 50 and 51.

CONTENTS

WARNINGS 4 BEFORE INSTALLATION 5

Product Receipt 5 Model Identification 5 Ratings and Certifications 5 Installations at Elevation 5 Component Locations 6 General Information 6

GENERAL SAFETY 7

Time/Temperature Relationships in Scalds 7

INSTALLATION 8

Installation Codes 8 Equipment Base 8 Clearances 8 Combustion and Ventilation Air 9 Conventional Combustion Air Supply 11 Water Piping 12 Hydronic Heating 14 Gas Supply 19 Electrical Power Connections 20 Field Wiring Connection 22 Venting 22 Venting Installation Tips 24 Venting Configurations 24 Engineered Vent Systems 27

Outdoor Installation 29 Controls 30 Heater Sequence of Operation 37

WIRING DIAGRAMS 40 START-UP 42

Pre Start-up 42 Start-Up 43

OPERATION 46

Lighting Instructions 46 To Turn Off Gas To Appliance 47 UDB Fault History 47

TROUBLESHOOTING 48 MAINTENANCE 49

Suggested Minimum Maintenance Schedule 49 Preventative Maintenance Schedule 49 Filter Maintenance 50 Filter Replacement 51

APPENDIX 51

Inside Air Contamination 51

IMPORTANT INSTRUCTIONS FOR THE COMMONWEALTH OF MASSACHUSETTS 52 WARRANTY 53 START-UP CHECKLIST 55

WARNINGS

Pay Attention to These Terms

ndicates the presence of immediate hazards which will cause severe

DANGER:

I personal injury, death or substantial property damage if ignored.

WARNING:

CAUTION:

NOTE:

DANGER: Make sure the gas on which the heater

will operate is the same type as that specified on the heater rating plate.

WARNING: Should overheating occur or the gas supply valve fail to shut, do not turn off or disconnect the electrical supply to the heater. Instead, shut off the gas supply at a location external to the heater.

WARNING: Do not use this heater if any part has been under water. Immediately call a qualified service technician to inspect the heater and to replace any part of the control system and any gas control which has been under water.

WARNING: To minimize the possibility of improper operation, serious personal injury, fire, or damage to the heater:

• Always keep the area around the heater free of combustible materials, gasoline, and other flammable liquids and vapors.

• Heater should never be covered or have any blockage to the flow of fresh air to the heater.

WARNING: Risk of electrical shock. More than one disconnect switch may be required to de-energize the equipment before servicing.

Indicates the presence of hazards or unsafe practices which could cause severe personal injury, death or substantial property damage if ignored.

Indicates the presence of hazards or unsafe practices which could cause minor personal injury or product or property damage if ignored.

Indicates special instructions on installation, operation, or maintenance which are important but not related to personal injury hazards.

CAUTION: Operation of this heater in low temperature systems requires special piping. Harmful internal condensation will occur if the inlet water temperature does not exceed 120°F. Warranty claims will be denied when condensation occurs.

CAUTION: If this heater is to be installed above radiation level, it must be provided with a low water cut-off device at the time of heater installation.

CAUTION: This heater requires forced water circulation when the burner is operating. See minimum and maximum flow rates. Severe damage will occur if the heater is operated without proper water flow circulation.

CAUTION: If this heater is to be installed in a negative or positive pressure equipment room, there are special installation requirements. Consult factory for details.

NOTE: Minimum 18 AWG, 105°C, stranded wire must be used for all low voltage (less than 30 volts) external connections to the unit. Solid conductors should not be used because they can cause excessive tension on contact points. Install conduit as appropriate. All high voltage wires must be the same size (105°C, stranded wire) as the ones on the unit or larger.

WARNING - CALIFORNIA PROPOSITION 65: This product contains chemicals known to the

State of California to cause cancer, birth defects or other reproductive harm.

BEFORE INSTALLATION

Raypak strongly recommends that this manual be reviewed thoroughly before installing your MVB heater. Please review the General Safety information before installing the heater. Factory warranty does not apply to heaters that have been improperly installed or operated. (Refer to the warranty at the back of this manual.) Installation and service must be performed by a qualified installer, service agency or gas supplier. If, after reviewing this manual, you still have questions which this manual does not answer, please contact your local Raypak representative or visit our website at www.raypak.com.

he upper rear jacket panel of the heater. The model

t number will have the form H7-2004 or similar depending on the heater size and configuration. The letter(s) in the first group of characters identifies the application

H = Hydronic Heating, P = Pool Heating, WH =

( Domestic Hot Water (DHW), WHP = Water Heater for

ool Heating). The number which follows identifies the

P firing mode (7 = electronic modulation, 1 = On/Off). The second group of characters identifies the size of the heater (three or four numbers representing the approximate MBTUH input), and, where applicable, a letter, indicating the manufacturing series.

Ratings and Certifications

Thank you for purchasing a Raypak product. We hope you will be satisfied with the high quality and durability of our equipment.

Product Receipt

On receipt of your heater it is suggested that you visually check for external damage to the shipping crate. If the crate is damaged, make a note to that effect on the Bill of Lading when signing for the shipment. Next, remove the heater from the shipping packaging. Report any damage to the carrier immediately.

On occasion, items are shipped loose. Be sure that you receive the correct number of packages as indicated on the Bill of Lading.

Claims for shortages and damages must be filed with the carrier by consignee. Permission to return goods must be received from the factory prior to shipping. Goods returned to the factory without an authorized Returned Goods Receipt number will not be accepted. All returned goods are subject to a restocking charge.

When ordering parts, you must specify the model and serial number of the heater. When ordering under warranty conditions, you must also specify the date of installation.

Purchased parts are subject to replacement only under the manufacturer’s warranty. Debits for defective replacement parts will not be accepted. Parts will be replaced in kind only per Raypak’s standard warranties.

Model Identification

The model identification number and heater serial number are found on the heater rating plate located on

Standards:

• ANSI Z21.56 · CSA 4.7 - latest edition, Gas-Fired Pool Heaters

• ANSI Z21.13 · CSA 4.9 - latest edition, Gas-Fired Hot Water Boilers

• CAN 3.1 - latest edition, Industrial and Commercial Gas-Fired Package Boilers

• ANSI Z21.10.3 · CSA 4.3 - latest edition, Gas Water Heaters

• SCAQMD Rule 1146.2

• Low-lead content (<.25%) CSA-verified

All Raypak heaters are National Board Approved, and design-certified and tested by the Canadian Standards Association (CSA) for the U.S. and Canada. Each heater is constructed in accordance with Section IV of the American Society of Mechanical Engineers (ASME) Heater Pressure Vessel Code and bears the ASME stamp. This heater also complies with the latest edition of the ASHRAE 90.1 Standard.

WARNING: Altering any Raypak pressure vessel by installing replacement heat exchangers, tube bundle headers, or any ASME parts not manufactured and/or approved by Raypak will instantly void the ASME and CSA ratings of the vessel and any Raypak warranty on the vessel. Altering the ASME or CSA ratings of the vessel also violates national, state, and local approval codes.

Installations at Elevation

Rated inputs are suitable for up to 4,500 ft elevation without de-rating. Consult your local representative or the factory for installations at altitudes over 4,500 ft above sea level. No hardware changes are required to the heaters for installations up to 10,000 ft (adjustments may be required).

HIGH VOLTAGE ELECTRICAL CONNECTIONS

Component Locations

Fig. 3: Component Locations – Rear

Panels omitted for clarity

Fig. 1: Component Locations – Side

Top panel, blower and gas train omitted for clarity

Fig. 4: Component Locations – Top

General Information

Model

No.

504 500 350 2 1 1 8 6

754 750 525 2 1 1 10 6

1104 1100 770 2-1/2 1-1/4 1 10 6

1504 1500 1050 2-1/2 1-1/4 1 12 8

MBTUH

Input*

Max.* Min.* N P Flue Intake

Water Conn. (NPT)

Gas

Conn.

(NPT)

Vent Size

(in.)

Panels omitted for clarity

Fig. 2: Component Locations – Front

2004 1999 1400 2-1/2 2 1 14 8

*H7 units only.

Table A: Basic Data

GENERAL SAFETY

Water temperature over 125°F can cause instant severe burns or death from scalds.

Children, disabled, and elderly are at highest risk of being scalded.

See instruction manual before setting temperature at water heater.

Feel water before bathing or showering.

Temperature limiting valves are available, see manual.

Water

Temp.

Time to Produce Serious

Burn

120°F More than 5 minutes

125°F 1-1/2 to 2 minutes

130°F About 30 seconds

135°F About 10 seconds

140°F Less than 5 seconds

145°F Less than 3 seconds

150°F About 1-1/2 seconds

155°F About 1 second

Table courtesy of The Shriners Burn Institute

To meet commercial hot water use needs, the high limit safety control on this water heater will shut off the main gas valve before the outlet temperature reaches 210°F. However, water temperatures over 125°F can cause instant severe burns or death from scalds. When supplying general purpose hot water, the recommended initial setting for the temperature control is 125°F.

This section applies to Hot Water Supply Boilers and Hot Water Heaters ONLY. For sanitary rinse applications where outlet temperatures of 180°F to 195°F are required, a boiler is recommended since the 210°F limit on water heaters will NOT allow the heater to maintain these desired sanitary rinse temperatures.

Safety and energy conservation are factors to be considered when setting the water temperature on the thermostat. The most energy-efficient operation will result when the temperature setting is the lowest that satisfies the needs of the application.

Water temperature over 125°F can cause instant severe burns or death from scalds. Children, disabled and elderly are at highest risk of being scalded.

• Feel water before bathing or showering.

• Temperature limiting valves are available.

NOTE: When this water heater is supplying general purpose hot water for use by individuals, a thermostatically controlled mixing valve for reducing point of use water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information.

Maximum water temperatures occur just after the heater’s burner has shut off. To determine the water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream and read the thermometer.

Time/Temperature Relationships in Scalds

The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications.

Table B: Time to Produce Serious Burn

Heater

Side

Minimum Clearance

from Combustible

Surfaces

Minimum

Service

Clearance

Floor* 0” 0”

Rear 12” 24”

Right

Side

1” 1”

Left Side 1” 1”

Top 0” 10”

Front Open 24”

Vent 1” 1”

The temperature of the water in the heater can be regulated by using the Raypak Modulating Temperature Control. To comply with safety regulations, the control is set at 120°F when shipped from the factory (Mode 3 default setting for Tank Target).

To adjust the water temperature, follow the instruction for the operation of the control starting on page 30 of this manual. The control is shown below for identification purposes only. (See Fig. 5.)

Equipment Base

The heater should be mounted on a level, structurally

ound surface. The heater is approved for installation

s on a combustible surface but must NEVER be

nstalled on carpeting. Gas-fueled equipment installed

i in enclosed parking garages must be located at least 18 in. above the floor.

CAUTION: This heater should be located in an area where water leakage will not result in damage to the area adjacent to the appliances or to the structure. When such locations cannot be avoided, it is recommended that a suitable catch pan, adequately drained, be installed under the appliance. The pan must not restrict air flow.

In addition, the heater shall be installed such that the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation or service (circulator replacement, control replacement, etc.).

Fig. 5: Modulating Temperature Control

CAUTION: Hotter water increases the risk of scalding! There is a hot water scald potential if the thermostat is set too high.

INSTALLATION

Installation Codes

Installations must follow these codes:

• Local, state, provincial, and national codes, laws, regulations and ordinances

• National Fuel Gas Code, ANSI Z223.1/NFPA 54 – latest edition (NFGC)

• National Electrical Code, ANSI/NFPA 70 - latest edition (NEC)

• Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1, (CSD-1) when required

• For Canada only: CAN/CSA B149 Natural Gas and Propane Installation Code and CSA C22.1 C.E.C. Part 1 (C22.1)

If the heater needs to be secured to the ground, use the brackets that were used to bolt the heater to the shipping pallet.

Clearances

Indoor Installations

*DO NOT install on carpeting.

Table C: Clearances – Indoor Installations

When installed according to the listed minimum clearances from combustible construction, these heaters can still be serviced without removing permanent structural construction around the heater. However, for ease of servicing, a clearance of at least 24 in. in front, at least 24 in. on the rear and 10 in. above the top of the heater is required. This will allow the heater to be

odes and the requirments of the gas supplier. Three

c sides must be open in the area under the overhang. Roof water drainage must be diverted away from heaters installed under overhangs.

The combustion air intake terminal MUST be used for

utdoor installations. The elbow is shipped loose to be

o installed on the rear of the heater at the job site.

Heater

Side

Rear 12” 24”

Front Open 24”

Right Side 1” 1”

Left Side 1” 1”

Top Unobstructed 10”

Vent

Termination

Table D: Clearances – Outdoor Installations

Min. Clearance

from Combustible

Surfaces

12” 12”

Minimum

Service

Clearance

Combustion and Ventilation Air

NOTE: Use of this heater in construction areas

where fine particulate matter, such as concrete or dry-wall dust, is present may result in damage to the heater that is not covered by the warranty. If operated in a construction environment, a clean source of combustion air must be provided directly to the heater.

Venting not shown for clarity. Heater must be vented per instruc-

tions in this manual

Fig. 6: Minimum Clearances from Combustible

Surfaces – Indoor and Outdoor Installations

serviced in its installed location without movement or removal of the heater.

Service clearances less than the minimum may require removal of the heater to service either the heat exchanger or the burner components. In either case, the heater must be installed in a manner that will enable the heater to be serviced without removing any structure around the heater.

Outdoor Installations

These heaters are design-certified for outdoor installation. Heaters must not be installed under an overhang unless they are in accordance with local installation

Indoor Units

This heater must be supplied with sufficient quantities of non-contaminated air to support proper combustion and equipment ventilation. Combustion air can be supplied via conventional means where combustion air is drawn from the area immediately surrounding the heater, or via direct vent, where combustion air is drawn directly from outside. All installations must comply with the requirements of the NFGC (U.S.) and B149 (Canada), and all local codes.

CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty. (See the Appendix.)

NOTE: It is recommended that the intake vent be insulated to minimize sweating.

U.S. Installations

Canadian Insta llations

Clearance above grade, veranda, porch, deck, or balcony

1 ft (30 cm) 1 ft (30 cm)

Clearance to window or door that may be opened

4 ft (1.2m) below or to side

of opening; 1 foot (30 cm)

above opening

3 ft (91 cm)

C Clearance to permanently closed window **

Vertical clearance to ventilated soffit located

above the terminal within a horizontal distance of 2 ft (61cm) from the centerline of the terminal

5 ft (1.5m) *

E Clearance to unventilated soffit **

F Clearance to outside corner **

G Clearance to inside corner 6 ft (1.83m) *

Clearance to each side of center line ex- tended above meter/regulator assembly

3 ft (91 cm) within a height

15 ft above the me-

ter/regulator assembly

I Clearance to service regulator vent outlet * 6 ft (1.83m)

Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance

4 ft (1.2m) below or to side

of opening; 1 ft (30 cm)

above opening

3 ft (91 cm)

K Clearance to mechanical air supply inlet

3 ft (91 cm) above if within

10 ft (3m) horizontally

6 ft (1.83m)

Clearance above paved sidewalk or paved driveway located on public property

7 ft (2.13m)

7 ft (2.13m) t

Clearance under veranda, porch, deck or balcony

* 12 in. (30 cm) TT

In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code

In accordance with the current CAN/CGA-B149 Installation Codes

t Vent terminal shall not terminate dir ectly above sidewalk or paved driveway located between 2 single family dwellings that s erves

both dwellings

TT Permitted only if veranda, porc h, deck, or balcony is fully open on a minimum of two sides beneath the floor and top of terminal and

underside of veranda, porch, deck or balcony is greater than 1 ft (30c m)

* Clearances in accordance with local installation codes and the requirements of the gas supplier

Fig. 7: Minimum Clearances from Vent/Air Inlet Terminations – Indoor and Outdoor Installations

Table E: Vent/Air Inlet Termination Clearances

Air Filter

An air filter is supplied standard with the heater. This filter is shipped loose for field installation. Refer to the Air Filter Kit Installation Instructions (Part No. 241338) for details.

r sealed single-wall galvanized ducting. The duct will

o attach directly to the air collar located on the rear of the heater, using three or four sheet metal screws (not supplied) equally positioned around the circumference

f the duct. The screen assembly should be removed

o before attaching any air duct to the heater. The screws

nd duct connection point must be sealed with RTV

a (not supplied). TruSeal is generally used when damaging contaminants are present in the mechanical room.

All ducting must be self-supported.

CAUTION: Use TruSeal combustion air if damaging airborne contaminants are or may be present in the heater area. See the Appendix of this manual regarding air contamination.

Fig. 8: Air Filter Box

Direct Vent

If outside air is drawn through the intake pipe directly to the unit for combustion:

1. Install combustion air direct vent in accordance with Fig. 27 (horizontal) or Fig. 28 (vertical) of this manual (pages 28 and 29, respectively).

2. Provide adequate ventilation of the space occupied by the heater(s) by an opening(s) for ventilation air at the highest practical point communicating with the outdoors. The total cross-sectional area shall be at least 1 in.2of free area per 20,000 BTUH (111 mm input rating of all equipment in the room when the opening is communicating directly with the outdoors or through vertical duct(s). The total cross-sectional area shall be at least 1 in. area per 10,000 BTUH (222 mm input rating of all equipment in the room when the opening is communicating with the outdoors through horizontal duct(s).

3. In cold climates, and to mitigate potential freezeup, Raypak highly recommends the installation of a motorized sealed damper to prevent the circulation of cold air through the heater during the non-operating hours.

per kW) of total

of free

TruSeal™ Combustion Air

In addition to the 3 previous steps, combustion air may be ducted directly to the heater by using PVC, CPVC

Conventional Combustion Air Supply

U.S. Installations

All Air from Inside the Building

The confined space shall be provided with TWO permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for a room large in comparison (NFGC). The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 in.2per 1,000 BTUH (2,225 mm2per kW) of the total input rating of all gas utilization equipment in the confined space, but not less than 100 in.2(645 cm2). One opening shall commence within 12 in. (305 mm) of the top, and one opening shall commence within 12 in. (305 mm) of the bottom of the enclosure. The minimum dimension of air openings shall be not less than 3 in. (76 mm) in any direction.

All Air from Outdoors

The confined space shall communicate with the outdoors in accordance with one of the methods below. The minimum dimension of air openings shall not be less than 3 in. (76 mm) in any direction. Where ducts are used, they shall be of the same cross-sectional area as the net free area of the openings to which they connect.

1. Two permanent openings, one commencing

within 12 in. (305 mm) of the top, and one commencing within 12 in. (305 mm) of the bottom of

the enclosure, shall be provided. The openings shall communicate directly, or by ducts, with the

utdoors or spaces (crawl or attic) that freely com-

o municate with the outdoors.

a. Where directly communicating with the out-

oors or where communicating to the

d outdoors through vertical ducts, each open- ing shall have a minimum free area of 1 in. per 4,000 BTUH (550 mm2per kW) of total input rating of all equipment in the enclosure.

b. Where communicating with the outdoors

through horizontal ducts, each opening shall have a minimum free area of 1 in.2per 2,000 BTUH (1,100 mm2per kW) of total input rating of all equipment in the enclosure.

2. One permanent opening, commencing within 12

in. (305 mm) of the top of the enclosure, shall be permitted where the equipment has clearances of at least 1 in. (25 mm) from the sides and back and 6 in. (152 mm) from the front of the appliance. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors, and shall have a minimum free area of:

a. 1 in.2per 3,000 BTUH (740 mm2per kW) of

the total input rating of all equipment located in the enclosure, and

b. Not less than the sum of the areas of all vent

connectors in the confined space.

WARNING: Do not use the “one permanent opening” method if the equipment room is under negative pressure conditions.

Canadian Installations

CAUTION: All combustion air must be drawn from

outside of the building; the mechanical equipment room must communicate directly with the outdoors.

2. For heaters using a barometric damper in the vent system there shall be a permanent air supply

pening(s) having a cross section area of not less

o than 1 in.

per 7,000 BTUH (320 mm2per kW) up to and including 1 million BTUH, plus 1 in.2per 14,000 BTUH (160 mm2per kW) in excess of 1

illion BTUH. This opening(s) shall be either

m located at or ducted to a point not more than 18 in.

(450 mm) nor less than 6 in. (152 mm) above the floor level. The duct can also “goose neck” through the roof. The duct is preferred to be straight down and terminated 18 in. (450 mm) from the floor, but not near piping. This air supply opening requirement shall be in addition to the air opening for ventilation air required in 1. (above).

WARNING: Care must be taken to ensure that the equipment room is not under negative pressure conditions.

3. For heaters not using a barometric damper in the vent system, and when air supply is provided by natural air flow from outdoors for a power burner and there is no draft regulator, drafthood or similar flue gas dilution device installed in the same space, in addition to the opening for ventilation air required in 1., there shall be a permanent air supply opening(s) having a total cross-sectional area

of not less than 1 in.

for each 30,000 BTUH (74 mm2per kW) of total rated input of the burner(s), and the location of the opening(s) shall not interfere with the intended purpose of the opening(s) for ventilation air referred to in 1. This opening(s) can be ducted to a point not more than 18 in. (450 mm) nor less than 6 in. (152 mm) above the floor level. The duct can also “goose neck” through the roof. The duct is preferred to be straight down 18 in. (450 mm) from the floor, but not near piping.

4. Refer to the B149 Installation Code for additional information.

Water Piping

1. Ventilation of the space occupied by the heater shall be provided by an opening(s) for ventilation air at the highest practical point communicating with the outdoors. The total cross-sectional area of such an opening(s) shall be at least 10% of the area required in 2. and 3. (below), but in no case shall the cross-sectional area be less than 10 in. (65 cm2).

General

The heater should be located so that any water leaks will not cause damage to the adjacent area or structures.

NOTE: In lieu of installing the System Temp Sensor in the system return loop, an alternate system using a buffer tank (see Fig. 31) can be used for better system temperature control.

CAUTION: This heater requires forced water circulation when the burner is operating. See Table F and Table G for minimum and maximum flow rates and water pump selection. The pump must be interlocked with the heater to prevent heater

peration without water circulation.

feed valve. Test at standard operating pressure for at least 24 hours.

2. Make sure constant gauge pressure has been maintained throughout test.

. Check for leaks. Repair if found.

NOTE: Minimum pipe size for in/out connections is 2 in. NPT for 504 and 754 models and 2-1⁄2 in NPT for 1104–2004 models. Verify proper flow rates and ∆T as instructed in this manual.

Relief Valve Piping

WARNING: Pressure relief valve discharge piping

must be piped near the floor and close to a drain to eliminate the potential of severe burns. Do not pipe to any area where freezing could occur. Refer to local codes.

Temperature & Pressure Gauge

The temperature and pressure gauge is shipped loose for field installation and must be installed within 12 inches of the boiler outlet (if possible) in an easily readable location. Installation must comply with ASME Section IV as well as all applicable national, state and

local codes.

Hydrostatic Test

Unlike many types of heaters, this heater does not require hydrostatic testing prior to being placed in operation. The heat exchanger has already been factory-tested and is rated for 160 psi operating pressure. However, Raypak does recommend hydrostatic testing of the piping connections to the heater and the rest of the system prior to operation. This is particularly true for hydronic systems using expensive glycolbased anti-freeze. Raypak recommends conducting the hydrostatic test before connecting gas piping or electrical supply.

Leaks must be repaired at once to prevent damage to the heater. NEVER use petroleum-based stop-leak compounds.

To perform hydrostatic test:

1. Connect fill water supply. With bleed valve open, fill heater with water. When water flows from bleed valve, shut off water. Close bleed valve. Carefully fill the rest of the system, making sure to eliminate any entrapped air by using high-point vents. Close

Cold Water Operation

CAUTION: Damage due to internal condensation

may occur if the heater inlet water temperature does not exceed 120°F (49°C) within 7 minutes of startup.

This heater is equipped with a proprietary condensate evaporation system which will evaporate any condensate that may begin to accumulate inside the primary heat exchanger with water temperatures as low as 120°F (49°C).

Heaters operated with an inlet temperature of less than 120°F (49°C) MUST have a manual bypass (see Fig. 16) or an approved low-temperature operation system (Figs. 9 and 10) to prevent problems with condensation. This piping is similar to a primary/secondary boiler installation, with a bypass acting as the secondary boiler piping. Raypak strongly recommends that thermometer(s) be placed into the heater piping next to the in/out header to facilitate temperature adjustment. Inlet water temperatures below 120°F (49°C) can excessively cool the products of combustion, resulting in collection of condensate in the heat exchanger area beyond the capacity of the condensate evaporation system.

Failure to reach or exceed 120°F (49°C) within 7 minutes may damage or cause failure of the heat exchanger, combustion chamber, or other parts within the combustion chamber. It can cause operational problems, bad combustion, sooting, flue gas leakage and reduced service life of the appliance and the vent system. A bypass allows part of the heater discharge water to be mixed with the cooler water returning to the heater inlet to increase the heater inlet temperature above 120°F (49°C). This precautionary measure should prevent the products of combustion from condensing beyond the ability of the condensate management system employed in this heater in most installations. Warranty claims will be denied for

damage or failures caused by condensation.

Cold water operation issues are applicable to both cold water start and cold water run applications. Cold water operation for 7 minutes or less on initial daily start-up is acceptable. Where cold water starts will last

longer than 7 minutes or where cold water operation is

continuous, provisions must be made to mix higher

emperature outlet water with the colder inlet water

t and thereby raise the inlet temperature to at least 120°F (49°C) within the 7-minute time limit.

Cold Water Starts

Cold water starts, where the inlet water temperature remains below 120°F (49°C) for more than 7 minutes,

have cold water start protection. Known pro-

must

tection methods consist of mixing heated outlet water with the inlet water using a bypass to raise the inlet to 120°F (49°C) or higher. Once the system is heated up and has return water temperatures of 120°F (49°C) or higher, the mixing of outlet water with inlet water is no longer needed and the bypass can be shut off. If the bypass is not shut off as the system heats up, the outlet temperature may continue to climb and trip the high limit, thereby shutting down the heater. Thus an automatic valve system, such as a three-way proportional valve or a modulating two-way valve to control the bypass, should be utilized.

and manually adjusted to achieve an inlet temperature of 120°F (49°C) or higher as adjusted at the minimum

emperature in this narrow temperature range (i.e.

t Range 75°F to 85°F – adjust bypass with temperature at 75°F (24°C)) so that when temperature is 85°F (29°C), minimum inlet temperature would be 130°F

54°C). An injector pump arrangement may also be uti-

( lized to keep the heater loop at or above 120°F (49°C). An injector pump approach has the added value of being able to adjust to changes in the system water coming back to the heater take-off.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 9: Cold Water Start

Cold Water Run

Cold water run differs from cold water start in that the system water entering the heater remains below 120°F (49°C) continuously. Typically, this is the case in swimming pool heating. If the system water is kept in a narrow temperature range of no more than 10°F (5°C), a permanent manual bypass can be employed

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 10: Cold Water Run

Hydronic Heating

Pump Selection

In order to ensure proper performance of your heater system, you must install a correctly-sized pump. Raypak requires designing for a ∆T within the range of 10°F to 40°F (5°C to 20°C). See Table F for acceptable flow rates for each model (∆T is the temperature difference between the inlet and outlet water when the heater is firing at full rate).

Feedwater Regulator

Raypak recommends that a feedwater regulator be installed and set at 12 psi minimum pressure at the highest point of the system. Install a check valve or back flow device upstream of the regulator, with a manual shut-off valve as required by local codes.

HERMOSTAT OR

YSTEM SENSOR

THERMOSTATOR SYSTEM SENSOR

Model

Input Output 20° ∆T 30° ∆T 40° ∆T Min. Flow Max. Flow

MBTUH gpm ∆P gpm ∆P gpm ∆P gpm ∆P ∆T gpm ∆P ∆T

504 500 420 42 2.7 28 1.4 25 1.1 34 100 11.3 8

754 750 630 63 6.0 42 2.9 32 1.7 32 1.7 40 100 13.8 13

1104 1100 924 92 13.3 62 6.7 46 4.1 46 4.1 40 113 18.6 16

1504 1500 1260 84 13.3 63 8.0 63 8.0 40 113 22.2 22

2004 1999 1679 112 26.9 84 16.0 84 16.0 40 113 27.2 30

Note: Basis for minimum flow is ∆T. Basis for maximum flow is gpm.

Table F: Heater Rates of Flow and Pressure Drops

Piping

All high points should be vented. A heater installed above radiation level must be provided with a low water cut-off device (sales order option F-10). This heater, when used in connection with a refrigeration system, must be installed so that the chilled medium is piped in parallel with the heater with appropriate valves to pre-vent the chilled medium from entering the heater.

The piping system of a hot water heater connected to heating coils located in air handling units where they may be exposed to circulating refrigerated air, must be equipped with flow control valves or other automatic means to prevent gravity circulation of the heater water during the cooling cycle. It is highly recommended that the piping be insulated.

Air-Separation/Expansion Tank

All heaters should be equipped with a properly sized expansion tank and air separator fitting as shown in Fig. 11.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 12: Single Heater - Low-Temperature (Heat Pump)

Application with Primary/Secondary Piping

Fig. 11: Air-Separation/Expansion Tank

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 13: Dual Heaters (Reverse/Return)

with Primary/Secondary Piping

SYSTEM SUPPLY

YSTEM

RETURN

Three-Way Valves

Three-way valves intended to regulate system water temperatures by reducing flow in the boiler should not be used. Raypak heaters are high-recovery, low-mass

eaters which are not subject to thermal shock. See

h Fig. 16 and instructions on page 17 for adjusting the manual bypass.

Domestic Hot Water

NOTE: If local codes require a vacuum relief valve,

acquire one locally and install per valve manufacturer’s instructions.

Potable Water and Space Heating

CAUTION: When this heater is used for both

potable water and space heating, observe the following to ensure proper operation.

When designing the water piping system for domestic hot water applications, water hardness should be considered. Table G indicates the suggested flow rates for soft, medium and hard water. Water hardness is expressed in grains per gallon.

Fig. 14: Single Domestic Hot Water Heater and Storage

Tank

1. All piping materials and components connected to the water heater for the space heating application shall be suitable for use with potable water.

2. Toxic chemicals, such as used for boiler treatment, shall not be introduced into the potable water used for space heating.

3. If the heater will be used to supply potable water, it shall not be connected to any heating system or components previously used with a non-potable water heating appliance.

4. When the system requires water for space heating at temperatures higher than 140°F (60°C), a means such as a mixing valve shall be installed to temper the water in order to reduce scald hazard potential.

Pool Heating

When a boiler or water heater is used in a pool heating application, ensure that all the following installation requirements are met.

Model

No.

504 500 420 17 50 3.6 2 5.9 13 65 5.5 2 9.3 9 95 10.4 2 18.1

754 750 630 25 50 4.0 2 6.3 20 65 6.4 2 10.2 13 100 13.8 2 22.2

1104 1045 888 30 60 6.4 2-1/2 7.6 20 92 13.2 2-1/2 15.9 16 113 18.7 2-1/2 22.6

1504 1425 1211 30 82 12.7 2-1/2 14.9 22 113 22.3 2-1/2 26.3 22 113 22.3 2-1/2 26.3

2004 1900 1615 30 110 26.1 2-1/2 29.8 29 113 27.4 2-1/2 31.3 29 113 27.4 2-1/2 31.3

∆T = Temperature rise, °F ∆P = Pressure drop through heat exchanger, ft SHL = System head loss, ft (based on heater and tank placed no more than 5 ft apart and equivalent length of 50 eq ft of tubing) gpm = Gallons per minute, flow rate MTS = Minimum tubing size *Must utilize optional cupro-nickel tubes. If over 25 grains per gallon, a water softener/treatment system must be utilized. Caution: For scale free operation with "Hard Water" (16-25 grains per gallon of total hardness), the operating control must NOT be set higher than 130°F. For higher than 130°F operation, a water softener/treatment system must be utilized.

MBTUH Soft (0-4 grains per gallon) Medium (5-15 grains per gallon) Hard* (16-25 grains per gallon)

Input Output ∆T gpm ∆P MTS SHL ∆T gpm ∆P MTS SHL ∆T gpm ∆P MTS SHL

Table G: Domestic Water Heater Flow Rate Requirements

The MVB must be equipped with a field-supplied ex-

POOL

THERMOSTAT

FROM

FILTER

TO POOL

HEMICAL

FEED

ternal pump and bypass arrangement. This arrangement blends outlet water with the inlet water to

ncrease the inlet water temperature to a minimum of

i 105°F (40°C) for Pool Heater (P and WHP) versions

nd 120°F (49°C) for Hydronic Heating (H7) or

a Domestic Hot Water (WH1) versions, thereby reducing the likelihood of condensation forming on the heat exchanger. The pump also serves to circulate water through the heater from the main system piping.

CAUTION: Power to the heater should be interlocked with the main system pump to make sure the heater does not fire without the main system pump in operation. Improper flow control can damage the heater. Uncontrolled flow (too high) or restricted flow (too low) can seriously damage the heater. Follow these instructions to make sure your heater is properly installed.

To complete the installation of the pool heater, the pool thermostat must be installed in the main return water line, upstream of the heater. This will ensure that the heater will be energized at the right time.

1. Turn on pump.

2. Turn on heater and wait until heater goes to full ire.

. With the heater operating at 100% firing rate, set

Valve A (the bypass) to

⁄2 open position, and Valve

B to fully open position. See Fig. 16.

4. Adjust Valve A until the inlet water temperature is

105°F (40°C) or 120°F (49°C) depending upon heater type.

NOTE: Opening the valve will increase the temperature and closing the valve will decrease the temperature.

5. If this process does not raise the inlet water tem-

perature to 105°F (40°C) for Pool Heater (P and WHP) versions and 120°F (49°C) for Hydronic Heating (H7) or Domestic Hot Water (WH1) versions and Valve A is fully open, then slowly throttle Valve B closed to increase the inlet water temperature to the required temperature.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 15: Single Pool Heater Application

Adjustment of the manual bypass valve is critical to proper operation of the heater. The manual bypass valve should be adjusted to achieve a minimum inlet water temperature of 105°F (40°C) for Pool Heater (P and WHP) versions and 120°F (49°C) for Hydronic Heating (H7) or Domestic Hot Water (WH1) versions and a system supply water temperature below 140°F (60°C). When starting with a cold pool, make initial adjustments. Make final adjustments when pool water approaches desired temperature.

The use of a bypass is required for proper operation in a pool heating application. Use the following instructions to set the manual bypass:

Fig. 16: “H” Bypass Setting

NOTE: For automatic temperature adjustment, a Cold Water Run (CWR) system can be used instead of a manual bypass. See Fig. 10.

Pool/Spa Water Chemistry

CAUTION: Corrosive water voids all warranties.

CAUTION: Combustion air must not be contami-

nated by corrosive chemical fumes which can damage the heater and void the warranty.

Winterizing Your Heater

Heaters installed outdoors as pool heaters in freezing climate areas should be shut down for the winter. To shut down the heater, turn off manual main gas valve and main gas shut-off. Close isolation valves. Drain the heater using the hose bibs located on the bottom of the heat exchanger.

NOTE: There are 2 separate drains on the MVB that must BOTH be drained to protect the heat exchanger. These are both accessible by removing the lower front door from the heater. Drain any piping of all water that may experience belowfreezing temperatures.

OTE: Chemical imbalance can cause severe

damage to your heater and associated equipment.

Chemical imbalance can cause severe damage to the pool heater and associated equipment. Maintain the water chemistry according to the chart below. If the mineral content and dissolved solids in the water become too high, scale forms inside the heat exchanger tubes, reducing heater efficiency and damaging the heater. If the pH drops below 7.2, this will cause corrosion of the heat exchanger and severely damage the heater. Heat exchanger damage resulting from chemical imbalance is not covered by the warranty.

For your health and the protection of your pool equipment, it is essential that your water be chemically balanced. The following levels must be used as a guide for balanced water.

Occasional chemical shock dosing of the pool or spa should not damage the heater providing the water is balanced.

Automatic chemical dosing devices and salt chlorinators are usually more efficient in heater water, unless controlled, they can lead to excessive chlorine level which can damage your heater.

Recommended Level(s) Fiberglass Pools Fiberglass Spas

Water Temperature 68-88°F (20-31°C) 89-104°F (31-40°C) 68-104°F (20-40°C)

pH 7.3-7.4 7.3-7.4 7.6-7.8

Total Alkalinity (ppm) 120-150 120-150 80-120

Calcium Hardness (ppm) 200-300 150-200 200-400

Salt (ppm) 6000 Maximum 6000 Maximum 6000 Maximum

Free Chlorine (ppm)* 2-3 2-3 2-3

Total Dissolved Solids

(ppm)

3000 Maximum 3000 Maximum 3000 Maximum

Other Pool and Spa

Types

*Free Chlorine MUST NOT EXCEED 5 ppm!

Table H: Water Chemistry

Further advice should be obtained from your pool or spa builder, accredited pool shop, or chemical supplier for the correct levels for your water.

Automatic Chlorinators and Chemical Feeders

All chemicals must be introduced and completely diluted into the pool or spa water before being circulated through the heater. Do not place sanitizing chemicals in the skimmer. High chemical concentrations will result when the pump is not running (e.g. overnight).

Chlorinators must feed downstream of the heater and have an anti-siphoning device to prevent chemical back-up into the heater when the pump is shut off.

NOTE: High chemical concentrates from feeders and chlorinators that are out of adjustment will cause rapid corrosion to the heat exchanger. Such damage is not covered under the warranty.

NOTE: Failure of a heat exchanger due to lime scale build-up on the heating surface, low pH or other chemical imbalance is non-warrantable.

he heater must be isolated from the gas supply pip-

T ing system by closing the upstream manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than

/2 psi (3.45 kPa). Relieve test pressure in the gas

1 supply line prior to reconnecting the heater and its

anual shut-off valve to the gas supply line. FAILURE

TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE. Over-pressurized gas valves are

not covered by warranty. The heater and its gas connections shall be leak-tested before placing the appliance in operation. Use soapy water for leak test. DO NOT use an open flame.

Gas Supply

DANGER: Make sure the gas on which the heater

will operate is the same type as specified on the heater’s rating plate.

Gas piping must have a sediment trap ahead of the heater gas controls, and a manual shut-off valve located outside the heater jacket. It is recommended that a union be installed in the gas supply piping adjacent to the heater for servicing. The gas supply pressure to the heater must not exceed 10.5 in. WC for natural gas or 13.0 in. WC for propane gas. A poundsto-inches regulator must be installed to reduce the gas supply pressure if it is higher than noted above. This regulator should be placed a minimum distance of 10 times the pipe diameter upstream of the heater gas controls. Refer to Table I for maximum equivalent pipe lengths.

Gas Supply Connection

CAUTION: The heater must be disconnected from

the gas supply during any pressure testing of the gas supply system at test pressures in excess of 1/2 psi (3.45 kPa).

Fig. 17: Gas Supply Connection

CAUTION: Do not use Teflon tape on gas line pipe thread. A pipe compound rated for use with natural and propane gases is recommended. Apply sparingly only on male pipe ends, leaving the two end threads bare.

CAUTION: Support gas supply piping with hangers, not by the heater or its accessories. Make sure the gas piping is protected from physical damage and freezing, where required.

Gas Supply Pressure

A minimum of 4.0 in. WC and a maximum of 10.5 in. WC upstream gas pressure is required under load and no-load conditions for natural gas. A minimum of 4.0 in. WC and a maximum of 13.0 in. WC is required for propane gas. The gas pressure regulator(s) supplied on the heater is for low-pressure service. If upstream pressure exceeds these values, an intermediate gas pressure regulator, of the lockup type, must be installed.

Model

No.

1 in. NPT 1-1/4 in. NPT 1-1/2 in. NPT 2 in. NPT 2-1/2 in. NPT

N P N P N P N P N P

754 5 15 35 75 70 175 250

1104 15 35 35 75 100 250 225

1504 10 20 20 45 60 150 150 275

2004 35 85 85 200

Natural Gas – 1,000 BTU/ft3, 0.60 specific gravity at 0.5 in. WC pressure drop Propane Gas – 2,500 BTU/ft

When connecting additional gas utilization equipment to the gas piping system, the existing piping must be checked to determine if it has adequate capacity for the combined load.

, 1.53 specific gravity at 0.6 in. WC pressure drop

Table I: Maximum Equivalent Pipe Length

• National Electrical Code and any other national,

• Safety wiring must be NEC Class 1.

state, provincial or local codes or regulations having jurisdiction.

• Heater must be electrically grounded as required The gas valve pressure regulator on the heater is nominally preset as noted in Table J.

During normal operation, carbon dioxide should be 8.5 to 9.0% at full fire for natural gas and between 9.5 and

10.0% for propane gas. Carbon monoxide should be ‹100ppm.

by the NEC.

• In Canada, CSA C22. 1 C.E.C. Part 1.

The MVB 504-1504 heaters are wired for 120 VAC, 12 amps while the MVB 2004 heaters are wired for 120 VAC, 18 amps. Consult the wiring diagram shipped with the heater. Before starting the heater, check to ensure proper voltage to the heater and pump.

Manifold Gas Pressure

Model

No.

504 -0.1 -0.1

(High Fire Values)

Natural Gas Propane Gas

Boiler mounted pumps (up to3⁄4 hp) get their power supply directly from the boiler power supply (connections in rear wiring box). Install a circuit breaker sized sufficiently for both the heater and the pump. Pumps larger than3⁄4 hp must use a separate power supply

754 -0.4 -0.1

1104 -1.0 -0.2

1504 -2.4 -0.6

2004 -1.0 -0.5

NOTE: Manifold pressures should be ±0.2 in. WC.

Table J: Manifold Gas Pressure Settings

and run the power through the optional pump contactor which is located in the rear wiring box. Use appropriately-sized wire as defined by NEC, CSA and/or local codes. All primary wiring should be 125% of minimum rating.

If any of the original wire as supplied with the heater must be replaced, it must be replaced with 105°C wire

or its equivalent. CAUTION: For proper operation, no more than a 30% drop in gas supply pressure from no-load to fullload conditions is acceptable. Under no circumstances should the pressure be outside the listed operational range.

All high voltage wiring connections to the MVB heater

are made inside the rear wiring box as shown in Fig.

18. Pump power should be taken from terminals 2

(Com), 3 (GND) and 6 (Hot) –3⁄4 hp and smaller ONLY.

Power to the MVB heater should be connected to ter-

Electrical Power Connections

minals 1, 2, and 3 as noted in Fig. 18. All low voltage

wiring, including sensors, interlocks, enable/disable,

and various options are wired into terminals 1–20 on

Installations must follow these codes:

the front wiring panel as noted in Fig. 18.

FRONT WIRING PANEL LOW VOLTAGE ELECTRICAL CONNECTIONS

Fig. 18: Wiring Electrical Connections

CIRCUIT

BREAKER

WHITE

GROUND

BLACK

GREEN

AB C

WARNING: Using a multi-meter, check the following voltages at the circuit breaker panel prior to connecting any equipment. Make sure proper polarity is followed and house ground is proven. (See Fig. 19.)

Check the power source:

AC = 108 VAC Minimum, 132 VAC MAX AB = 108 VAC Minimum, 132 VAC MAX BC = <1 VAC Maximum

Field-Connected Controllers

It is strongly recommended that all individually-powered control modules and the heater should be supplied from the same power source.

NOTE: Field-supplied isolation relays should be installed when field-connected controllers are mounted more than 50 equivalent feet (18 AWG) from heater. See wiring diagrams.

Check the Power Source

Fig. 20: Multi-meter

Making the Electrical Connections

Refer to Fig. 18-21.

1. Verify that circuit breaker is properly sized by referring to heater rating plate. A dedicated circuit breaker should be provided.

2. NOTE: Current draw noted on rating plate does not include pump current.

3. Turn off all power to the heater. Verify that power has been turned off by testing with a multi-meter prior to working with any electrical connections or components.

4. Observe proper wire colors while making electrical connections. Many electronic controls are polarity sensitive. Components damaged by improper electrical installation are not covered by warranty.

Fig. 19: Wiring Connections

5. Provide overload protection and a disconnect means for equipment serviceability as required by local and state code.

6. Install heater controls, thermostats, or building management systems in accordance with the applicable manufacturers’ instructions.

7. Conduit should not be used as the earth ground.

HIGH VOLTAGE

WIRING

NOTE: A grounding electrode conductor shall be

LOCATOR DIMPLES

FOR OPTIONAL

COMPONENTS

used to connect the equipment grounding conductors, the equipment enclosures, and the grounded service conductor to the grounding

lectrode.

Field Wiring Connection

CAUTION: Label all wires prior to disconnection

when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

DANGER: SHOCK HAZARD

Make sure electrical power to the heater is disconnected to avoid potential serious injury or damage to components.

Venting

CAUTION: Proper installation of flue venting is

critical for the safe and efficient operation of the heater.

General

Appliance Categories

Heaters are divided into four categories based on the pressure produced in the exhaust and the likelihood of condensate production in the vent.

Category I – A heater which operates with a non-positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.

Category II – A heater which operates with a non-positive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

Fig. 21: High Voltage Wiring Location

Category III – A heater which operates with a positive

vent pressure and with a vent gas temperature that avoids excessive condensate production in the vent.

Category IV – A heater which operates with a positive vent pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

See Table K for appliance category requirements.

NOTE: For additional information on appliance categorization, see appropriate ANSI Z21 Standard and the NFGC (U.S.), or B149 (Canada), or applicable provisions of local building codes.

CAUTION: Condensate drains for the vent piping are required for installations of the MVB. Follow vent manufacturer instructions for installation and location of condensate drains in the vent. Condensate drain must be primed with water to prevent gas flue leak and must be routed to an appropriate container for neutralization before disposal, as required by local codes.

Fig. 22: Locator Dimples for Optional Components

WARNING: Contact the manufacturer of the vent material if there is any question about the appliance categorization and suitability of a vent material for application on a Category III or IV vent system. Using improper venting materials can result in personal injury, death or property damage.

Combustion

Air Supply

Exhaust

Configuration

Heater Venting

Category

Certified

Materials

Combustion Air

Inlet Material

Vertical

From Inside Building

(Non-Direct Venting)

From Outside Building

(Direct Venting)

Venting

Horizontal Through-

he-Wall Venting

Vertical Venting

Horizontal Through-

the-Wall Venting

Table K: Venting Category Requirements

Support of Vent Stack

The weight of the vent stack or chimney must not rest on the heater vent connection. Support must be provided in compliance with applicable codes. The vent should also be installed to maintain proper clearances from combustible materials. Use insulated vent pipe spacers where the vent passes through combustible roofs and walls.

Vent Terminal Location

III

6. Un-insulated single-wall metal vent pipe shall not be used outdoors in cold climates for venting gasfired equipment.

7. Through-the-wall vents for Category II and IV appliances and non-categorized condensing appliances shall not terminate over public walkways or over an area where condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators, relief valves, or other equipment. Where local experience indicates that condensate is a problem with Category I and III appliances, this provision shall also apply.

B-Vent

Equivalent

Stainless Steel

L29-4C

B-Vent

Equivalent

Stainless Steel

AL29-4C

Galvanized Steel

PVC ABS

CPVC

NOTE: During winter months check the vent cap and make sure no blockage occurs from build-up of snow or ice.

1. Condensate can freeze on the vent cap. Frozen condensate on the vent cap can result in a blocked flue condition.

2. Give special attention to the location of the vent termination to avoid possibility of property damage or personal injury.

3. Gases may form a white vapor plume in winter. The plume could obstruct a window view if the termination is installed near windows.

4. Prevailing winds, in combination with below-freezing temperatures, can cause freezing of condensate and water/ice build-up on buildings, plants or roofs.

5. The bottom of the vent terminal and the air intake shall be located at least 12 in. above grade, including normal snow line.

8. Locate and guard vent termination to prevent accidental contact by people or pets.

9. DO NOT terminate vent in window well, stairwell, alcove, courtyard or other recessed area.

10. DO NOT terminate above any door, window, or gravity air intake. Condensate can freeze, causing ice formations.

11. Locate or guard vent to prevent condensate from damaging exterior finishes. Use a rust-resistant sheet metal backing plate against brick or masonry surfaces.

12. DO NOT extend exposed vent pipe outside of building beyond the minimum distance required for the vent termination. Condensate could freeze and block the vent pipe.

U.S. Installations

Refer to the latest edition of the National Fuel Gas Code.

Vent termination requirements are as follows:

1. Vent must terminate at least 4 ft below, 4 ft horizontally from or 1 ft above any door, window or gravity air inlet to the building.

2. The vent must not be less than 7 ft above grade when located adjacent to public walkways.

. Terminate vent at least 3 ft above any forced air

inlet located within 10 ft.

5. Within 6 ft (1.8 m) of any gas service regulator vent outlet.

. Less than 1 ft (305 mm) above grade level.

7. Within the 3 ft (915 mm) of a window or door which can be opened in any building, any non-mechani-

al air supply inlet to any building or the

c combustion air inlet of any other appliance.

4. Vent must terminate at least 4 ft horizontally, and in no case above or below unless 4 ft horizontal distance is maintained, from electric meters, gas meters, regulators, and relief equipment.

5. Terminate vent at least 6 ft away from adjacent walls.

6. DO NOT terminate vent closer than 5 ft below roof overhang.

7. The vent terminal requires a 12 in. vent terminal clearance from the wall.

8. Terminate vent at least 1 ft above grade, including normal snow line.

9. Multiple direct vent installations require a 4 ft clearance between the ends of vent caps located on the same horizontal plane.

WARNING: The Commonwealth of Massachusetts requires that sidewall vented heaters, installed in every dwelling, building or structure used in whole or in part for residential purposes, be installed using special provisions as outlined on page 53 of this manual.

Canadian Installations

Refer to latest edition of the B149 Installation code.

8. Underneath a verandah, porch or deck, unless the verandah, porch or deck is fully open on a minimum of two sides beneath the floor, and the distance between the top of the vent termination and the underside of the verandah, porch or deck is greater than 1 ft (305 mm).

Venting Installation Tips

Support piping:

• horizontal runs—at least every 5 ft

• vertical runs—use braces

• under or near elbows

WARNING: Examine the venting system at least once a year. Check all joints and vent pipe connections for tightness, corrosion or deterioration.

Venting Configurations

For heaters connected to gas vents or chimneys, vent installations shall be in accordance with the NFGC (U.S.), or B149 (Canada), or applicable provisions of local building codes.

Natural Draft Vertical Venting (Category I)

A vent shall not terminate:

1. Directly above a paved sidewalk or driveway which is located between two single-family dwellings and serves both dwellings.

2. Less than 7 ft (2.13 m) above a paved sidewalk or paved driveway located on public property.

3. Within 6 ft (1.8 m) of a mechanical air supply inlet to any building.

4. Above a meter/regulator assembly within 3 ft (915 mm) horizontally of the vertical centre-line of the regulator.

Installation

Natural draft venting uses the natural buoyancy of the heated flue products to create a thermal driving head that expels the exhaust gases from the flue. The negative draft must be within the range of -.01 to -.08 in. WC as measured 12 in. above the appliance flue outlet to ensure proper operation. Vent material must be listed by a nationally recognized test agency.

The maximum and minimum venting length for Category I appliances shall be determined per the NFGC (U.S.) or B149 (Canada).

Model

No.

Certified

Vent

Material

Vent Size

(in.)

Vertical Vent

Height1(ft)

Min. Max. 6” Ø 8” Ø 10” Ø

Combustion Air

Intake Pipe

Material

Air Inlet

Max. Length* (ft)

504

Galvanized

Category I

1104 10

(Type B

Equivalent)

1504 12

5 25

Steel,

PVC, ABS,

CPVC

2004 14

Vent lengths are based on a lateral length of 2 ft. Refer to the latest edition of the NFGC for further

details. When vertical height exceeds 25 ft, consult factory prior to installation. * Subtract 10 ft per elbow. Max. 4 elbows. ** Adapters supplied by others.

Table L: Category I Vertical Venting

The diameter of vent flue pipe should be sized according to the NFGC (U.S.) and B149 (Canada).

The connection from the appliance vent to the stack must be as direct as possible. The horizontal breaching of a vent must have an upward slope of not less than 1/4 inch per linear foot from the heater to the vent terminal. The horizontal portions of the vent shall also be supported for the design and weight of the material employed to maintain clearances and to prevent physical damage or separation of joints.

45 100**754 10

45 85**

Termination

The vent terminal should be vertical and should terminate outside the building at least 2 ft above the highest point of the roof that is within 10 ft. The vent cap should have a minimum clearance of 4 ft horizontally from and in no case above or below (unless a 4 ft horizontal distance is maintained) electric meters, gas meters, regulators and relief equipment. The distance of the vent terminal from adjacent public walkways, adjacent buildings, open windows and building openings must be consistent with the NFGC (U.S.) or B149 (Canada). Gas vents supported only by flashing and extended above the roof more than 5 ft should be securely guyed or braced to withstand snow and wind loads.

CAUTION: A listed vent cap terminal adequately sized, must be used to evacuate the flue products from the building.

Fig. 23: Vertical Venting

ommon Venting

anifolds that connect more than one heater to a com-

M mon chimney must be sized to handle the combined load. Consult available guides for proper sizing of the manifold and the chimney. At no time should the area

f the common vent be less than the area of the

o largest heater exhaust outlet.

WARNING: Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under a positive pressure.

CAUTION: Vent connectors for natural draft venting systems must be Type B or better.

Common venting systems may be too large once an existing unit is removed. At the time of removal of an existing appliance, the following steps must be fol- lowed with each appliance remaining connected to the

ommon venting system placed in operation, while the

c other appliances remaining connected to the common venting system are not in operation.

. Seal any unused opening in the common venting

system.

2. Visually inspect the venting system for proper size and horizontal pitch and verify there is no blockage, restriction, leakage, corrosion or other unsafe condition.

3. Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common vent system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, at maximum speed. Do not operate summer exhaust fan. Close fireplace dampers.

Fig. 24: Typical Common Venting

4. Place in operation the appliances being inspected.

OPTIONAL HORIZONTALTHROUGH-THE-WALL VENTING

(CATEGORY IV)

Follow the manufacturer’s instructions for lighting each appliance. Adjust thermostat so appliance

ill operate continuously.

. Check the pressure at a pressure tap located 12

in. above the bottom joint of the first vertical vent pipe. Pressure should be anywhere between -0.01 and -0.08 in. WC.

6. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and other gas burning appliances to their previous conditions of use.

7. Any improper operation of the common venting system should be corrected so that the installation conforms with the NFGC (U.S.) or B149 (Canada). When re-sizing any portion of the common venting system, the common venting system should be resized to approach the minimum size as determined using the appropriate tables in Appendix G in the NFGC (U.S.) or B149 (Canada).

odel

No.

ent Size

(in.)

Volume of

Flue Products

(CFM)

504 8 170

754 10 260

1104 10 380

1504 12 510

2004 14 680

NOTE: Data for 100% firing rate.

Table M: Typical Volume of Flue Products

Horizontal Through-the-Wall Direct Venting (Category III)

Engineered Vent Systems

Table M provides boiler discharge vent volumes of flue products at full fire for the calculation of appropriate vent sizing for common venting.

WARNING: Vent connectors serving any other appliances shall not be connected into any portion of mechanical draft systems operating under a positive pressure. If an MVB heater is installed to replace an existing heater, the vent system MUST be verified to be of the correct size and Category. If it is NOT, it MUST be replaced.

NOTE: For extractor sizing, typical CO2levels are

8.5% for natural gas and 9.5% for LP gas and flue temperature of 350° F.

Fig. 25: Horizontal Through-the-Wall Venting

Fig. 26: Alt. Horizontal Through-the-Wall Venting

NOTE: While a drain connection is required in the vent of all Cat. III horizontal MVB installations, the drain can be accomplished in several different ways. The figures in this manual show the drain in a vent tee, however, this can also be accomplished using an inline collector for condensing stacks or an inline vertical or horizontal collector available from several of the listed vent manufacturers.

• 75’ of straight flue pipe

• 65’ of straight flue pipe and one elbow 55’ of straight flue pipe and two elbows

•

• 45’ of straight pipe and three elbows

The vent cap is not considered in the overall length of the venting system.

The vent must be installed to prevent flue gas leakage. Care must be taken during assembly to ensure that all joints are sealed properly and are airtight. The vent must be installed to prevent the potential accumulation of condensate in the vent pipes. It is required that:

1. The vent must be installed with a condensate drain located in proximity to the heater as directed by the vent manufacturer.

2. The vent must be installed with a slight upward slope of not less than 1/4 inch per foot of horizontal run to the vent terminal.

3. The vent must be insulated through the length of the horizontal run.

Fig. 27: Horizontal Through-the-Wall Direct Venting

CAUTION: This venting system requires the installation of a condensate drain in the vent piping per the vent manufacturer’s instructions. Failure to install a condensate drain in the venting system will void all warranties on this heater.

Installation

These installations utilize the heater-mounted blower to vent the combustion products to the outdoors. Combustion air is taken from inside the room and the vent is installed horizontally through the wall to the outdoors. Adequate combustion and ventilation air must be supplied to the equipment room in accordance with the NFGC (U.S.) or B149 (Canada).

The total length of the horizontal through-the-wall flue system should not exceed 75 equivalent ft in length. If horizontal run exceeds 75 equivalent ft, an appropriately sized variable-speed extractor must be used. Each elbow used is equal to 10 ft of straight pipe. This will allow installation in one of the four following arrangements:

Termination

The flue direct vent cap MUST be mounted on the exterior of the building. The direct vent cap cannot be installed in a well or below grade. The direct vent cap must be installed at least 1 ft above ground level and above normal snow levels. The Raypak-approved stainless steel flue direct vent cap must be used (sales order option D-15). The vent terminal must be located NO CLOSER than 12” off the wall.

WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardize the safety and health of inhabitants.

Direct Vent—Vertical

Installation

These installations utilize the heater-mounted blower to draw combustion air from outdoors and force the heated flue products through the vent pipe under positive pressure. The vent material must be in accordance with the above instructions for vent materials. Vent material must be listed by a nationally recognized test agency.

The connection from the appliance flue to the stack must be as direct as possible and should be the same size or larger than the vent outlet.

Model

ertified

Vent

Material

ent

Size (in.)

Maximum

Horizontal

ent Length

(ft)**

ombustion Air

Intake Pipe

Material

Air Inlet

ax. Length** (ft)

6” Ø 8” Ø 10” Ø

504

754 10

1104 10

Category III

1504 12

2004 14

** Subtract 10 ft per elbow. Max. 4 elbows. t

Adapters supplied by others.

Table N: Category III Horizontal Vent & Horizontal Direct Vent

Galvanized Steel,

100

PVC,

ABS,

CPVC

a minimum clearance of 4 ft horizontally from and in no case above or below (unless a 4 ft horizontal distance is maintained) electric meters, gas meters, regulators and relief equipment. The distance of the vent terminal from adjacent public walkways, adjacent buildings, open windows and building openings must be consistent with the NFGC (U.S.) or B149 (Canada).

Flues supported only by flashing and extended above the roof more than 5 ft should be securely guyed or braced to withstand snow and wind loads.

Fig. 28: Direct Vent - Vertical

See Table L for Category I venting guidelines.

It is recommended that the intake vent be insulated in colder climates.

Termination

The flue terminal should be vertical and should terminate outside the building at least 2 ft above the highest point of the roof within 10 ft. The vent cap should have

The air inlet opening MUST be installed 1 ft above the roof line or above normal snow levels that might obstruct combustion air flow. This dimension is critical to the correct operation of the heater and venting system and reduces the chance of blockage from snow. The vent cap must have a minimum 3 ft vertical clearance from the air inlet opening.

WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardize the safety and health of inhabitants.

Outdoor Installation

Outdoor models must be vented with listed vent material per the following instructions and installed with the optional factory-supplied outdoor vent kit. A special vent cap and air intake hood are provided in accordance with CSA requirements. These must be installed as illustrated in Fig. 29.

Care must be taken when locating the heater outdoors, because the flue gases discharged from the

vent cap can condense as they leave the cap. Improper location can result in damage to adjacent

tructures or building finish. For maximum efficiency

s and safety, the following precautions must be observed:

. Outdoor models must be installed outdoors and

must use the outdoor vent cap and air intake hood available from the manufacturer (sales order option D-11).

2. Periodically check venting system. The heater’s venting areas must never be obstructed in any way and minimum clearances must be observed to prevent restriction of combustion and ventilation air. Keep area clear and free of combustible and flammable materials.

NOTE: The vent cap and air intake hood must be furnished by the heater manufacturer in accordance with its listing (sales order option D-11).

OTE: Condensate can freeze on the vent cap.

Frozen condensate on the vent cap can result in a

locked flue condition.

Freeze Protection

The Raypak electronic temperature control includes a freeze protection feature. In the event the temperature drops below 40°F at any of the boiler temperature sensors, the pump is turned on and will remain on until the temperature at all boiler sensors rises to 45°F.

3. Do not locate adjacent to any window, door, walkway, or gravity air intake. The vent must be located a minimum of 4 ft horizontally from such areas.

4. Install above grade level and above normal snow levels.

5. Vent terminal must be at least 3 ft above any forced air inlet located within 10 ft.

6. Adjacent brick or masonry surfaces must be protected with a rust-resistant sheet metal plate.

Controls

WARNING: Installation, adjustment and service of

heater controls, including timing of various operating functions, must be performed by a qualified installer, service agency or the gas supplier. Failure to do so may result in control damage, heater malfunction, property damage, personal injury, or death.

WARNING: Turn off the power to the heater before installation, adjustment or service of any heater controls. Failure to do so may result in board damage, heater malfunction, property damage, personal injury, or death.

CAUTION: This appliance has provisions to be connected to more than one supply source. To reduce the risk of electric shock, disconnect all such connections before servicing.

CAUTION: Risk of electric shock: More than one disconnect switch may be required to de-energize the equipment before servicing.

Fig. 29: Outdoor Venting

The Raypak electronic temperature control is provided to maintain the desired system water temperature. The control has various modes of operation which are described on the following pages.

To minimize short cycling, locate the system (target) sensor as follows:

Setpoint: The intended system supply temperature.

Deadband: Deadband is a band of temperature sensing where no action occurs. All temperature controllers

ave a deadband and the purpose is to prevent short-

h cycling of the heater. The on-board temperature controller has a deadband of 2ºF around the differential.

Differential: A heat source must be operated with a temperature differential in order to prevent shortcycling. The temperature differential is divided around the “target” temperature or set-point. The Call For Heat (CFH) contact will close in the controller when the water temperature is below the target temperature by 1/2 of the differential setting, and will open when the water temperature is above the target temperature by 1/2 of the differential setting. See Fig. 30.

Fig. 30: Differential Graph

For systems with less than 4:1 turndown, the control should be placed in the system return, upstream of the inlet piping to the heater, as shown in Figs. 32, 34 and

35. This placement will avoid short cycling the heat source. Raypak recommends using a smaller differential setting when controlling the water temperature on the return side. As a starting point, set the return differential to 10ºF and this will allow the system return temperature to vary 5ºF above and 5ºF below the setpoint.

Fig. 31: Buffer Tank Piping

Mode 2 – Setpoint operation using primary/secondary

piping. The control operates the heater to satisfy a remote system sensor. The heater is turned off based on boiler target and boiler differential (factory default H7, P and WHP boilers). See Fig. 32.

For systems with more than 4:1 turndown, the recommended location of the system (target) sensor is in the system supply loop, downstream of the outlet piping from the heater. When controlling systems with more than 4:1 turndown; set the supply side differential to 20ºF and the temperature will vary ±10ºF around the setpoint.

In lieu of installing the target sensor in the system return, a properly-sized buffer tank can be installed as shown in Fig. 31. Consult factory for buffer tank sizing.

Operating Modes

Mode 1 (Not supported) – Setpoint operation using primary piping. The heater outlet water temperature is controlled to the boiler target setpoint.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 32: Mode 2 Primary/Secondary Piping

Mode 3 – Dedicated DHW operation using UniTemp

80 piping. A call for heat is determined by the DHW sensor and the DHW boiler target. The heater outlet water is also controlled to the boiler target temperature (factory default WH1 water heaters). See Fig. 33.

ELECTRONIC

Fig. 33: Mode 3 Dedicated DHW

Mode 4 (Not supported) – Outdoor reset using pri-

mary piping. The heater is operated as in Mode 1. However, the target temperature is based on outdoor reset.

Mode 5 – Outdoor reset using primary/secondary piping. The heater is operated as in Mode 2. However, the target temperature is based on outdoor reset. See Fig.

34.

rol operates the boiler burner to maintain the boiler

t target at the boiler outlet sensor.

Mode 7 – Designed for an external input signal with

rimary/secondary piping. The external input signal

p can be provided from a BMS, an EMS or an external

ontrol. The external input signal changes the boiler

c target according to a linear scale (see Tables O & P). The control operates the boiler burner to maintain the boiler target at the system sensor. See Fig. 35.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 34: Mode 5 Primary/Secondary Piping with

Outdoor Reset

Mode 6 (Not supported) – Designed for an external

input signal with primary piping. The external input signal can be provided from a BMS, an EMS or a sequencing control. The external input signal changes the boiler target according to a linear scale. The con-

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 35: Mode 7 Primary/Secondary Piping with

External Target Temp

0-10 VDC 0-20 mA* Boiler Target

0 0 --- (OFF)

1 2 50°F

2 4 68.9°F

3 6 87.8°F

4 8 106.7°F

5 10 125.6°F

6 12 144.1°F

7 14 163.3°F

8 16 182.2°F

9 18 201.1°F

10 20 220°F

*Requires a 500Ω resistor.

Table O: 0-10 VDC or 0-20 mA External Input Signal

2-10 VDC 4-20 mA* Boiler Target

RAYPA K M

ODULATING

EMP CONTROL

UTDOOR AIR

ENSOR

0 0 --- (OFF)

1 2 --- (OFF)

2 4 5

0°F

3 6 71.3°F

4 8 92.5°F

5 10 113.8°F

6 12 135°F

7 14 156.3°F

8 16 177.5°F

9 18 198.8°F

10 20 220°F

*Requires a 500Ω resistor.

Table P: 2-10 VDC or 4-20 mA External Input Signal

Mode 8 – This mode is for remote firing control of the

heater via an external sequencer such as the Raypak TempTracker MOD+. The Boil Max setting is the heater shutdown temperature (max temperature). The heater is enabled via dry contact at the Enable/Disable connection at the low voltage terminal strip, and the firing rate is controlled by a 0-10 VDC signal from the external sequencer. A control signal of ≥0.5 VDC equates to minimum fire, and a signal of 10 VDC equates to 100% firing rate.

NOTE: For Modes 7 and 8, connect to pins 13 and 14 on the low-voltage panel. See page 21. Use these modes for systems using an external signal.

*Maximum 4 times the pipe diameter or 12”, whichever is less.

Fig. 36: Mode 8 Primary/Secondary Piping with

External Direct Drive

BOIL ON - Accumulated runtime of heater (up to 999

hours, then resets to 0).

BOIL OUT - Actual heater outlet water temperature.

BOIL START - Starting boiler water temperature.

BOIL SUP - Actual system supply water temperature.

BOIL TARGET - Target temperature that the heater is

trying to maintain.

Definitions

NOTE: The defined terms are not active in all

modes of control operation.

% OUT - Current percent modulation rate of heater.

BOIL DSGN - Design boiler water temperature used in

heat loss calculations.

BOIL MASS - This setting allows adjustment in the field for high or low thermal masses; High thermal mass (setting=3) provides slower reaction, lower thermal mass (setting=1) provides faster reaction.

BOIL MAX - Highest outlet water temperature that the control is allowed to use as a target temperature.

BOIL MIN - Lowest outlet water temperature that the control is allowed to use as a target temperature.

‘BURNER’ DELAY - Holds control output at ignition setting from the start of the ignition sequence to the specified burner delay time (0 to 3:00 min.).

DEM 1 - Indicates 24 VDC signal has been supplied to the H+D terminal.

DEM 2 - Indicates 24 VDC Flame Proof signal is present.

DIFF - The operating differential of the heater; The heater outlet water temperature is allowed to rise above the BOIL TARGET temperature by1⁄2 of this dif- ferential before the heater shuts off. For example, if the heater target temperature is set to 160°F (71°C) and the differential is set to 10°F (5°C), on temperature rise, the heater will shut off at 165°F (74°C). Once the heater shuts off, it will not come on again until the temperature falls to 155°F (68°C).

Boiler (H7)

Item Modes Default Setting Range

oil Target

2 1

3 1

40°F

60°F

FF, 70 to 220°F

FF, 70 to 190°F

5, 7 180°F OFF, 70 to 220°F

2, 5, 7, 8 200°F OFF, 120 to 225°F

Boil Max

3 180°F OFF, 120 to 190°F

Boil Min 2, 3, 5, 7 135°F OFF, 80 to 180°F

‘Burner’ Delay All 0:00 min 0:00 to 3:00 min

Boil Mass All 1 (Low) 1 (Low), 2 (Med), 3 (High)

Diff 2, 3, 5, 7 Auto Auto, 2 to 42°F

DHW Target 3 120°F OFF, 70 to 190°F

DHW Diff 3 5°F 2 to 10°F

‘Pump’ Dly All 3:00 min OFF, 0:20 to 9:55 min, ON

Outdr Start 5 70°F 35 to 85°F

Outdr Design 5 -10°F -60 to 32°F

Boil Start 5 135°F 35 to 150°F

Boil Dsgn 5 180°F 120 to 220°F

WWSD 5 70°F 35 to 100°F

Units All °F °F or °C

Mode N/A 2 2, 3, 5, 7, 8

External Input Signal 7 2 to 10 VDC 2 to 10 VDC or 0 to 10 VDC

Offset 7 0°F -10°F to 10°F

Table Q: Temperature Control Default Setpoints—Boiler

Pool Heater (P, WHP)

Item Modes Default Setting Range

Boil Target 2 78°F OFF, 45 to 106°F

Boil Max 2 86°F OFF, 70 to 106°F

Boil Min 2 70°F OFF, 45 to 106°F

‘Burner’ Delay All 0:00 min 0:00 to 3:00 min

Boil Mass All 1 (Low) 1 (Low), 2 (Med), 3 (High)

Diff 2 1°F 1 to 3°F

‘Pump’ Dly All 3:00 min OFF, 0:20 to 9:55 min, ON

Units All °F °F or °C

Mode N/A 2 2

Table R: Temperature Control Default Setpoints—Pool Heater

Water Heater (WH1)

Item Modes Default Setting Range

Boil Target

2 140°F OFF, 70 to 190°F

3, 7 160°F OFF, 70 to 190°F

oil Max

, 3, 6, 7

Boil Min 2, 3, 7 135°F OFF, 80 to 180°F

‘Burner’ Delay All 0:00 min 0:00 to 3:00 min

Boil Mass All 1 (Low) 1 (Low), 2 (Med), 3 (High)

Diff 2, 3, 7 Auto Auto, 2 to 42°F

DHW Target 3 120°F OFF, 70 to 190°F

DHW Diff 3 5°F 2 to 10°F

‘Pump’ Dly All 3:00 min OFF, 0:20 to 9:55 min, ON

Units All °F °F or °C

Mode N/A 3 2, 3, 7

External Input Signal 7 2 to 10 VDC 2 to 10 VDC or 0 to 10 VDC

Offset 7 0°F -10°F to 10°F

Table S: Modulating Temperature Control Default Setpoints—Water Heater

EXTERNAL INPUT SIGNAL – Selects external input

signal range (0-10VDC or 2-10VDC):

80°F

FF, 120 to 190°F

installing a 500 Ω resistor on the external input signal device’s terminals.

0-10VDC or 0-20 mA external input signal – When the 0-10VDC signal is selected, an input voltage of 1 VDC corresponds to a boiler target temperature of 50°F (10°C). An input voltage of 10 VDC corresponds to a boiler target temperature of 220°F (104°C). As the voltage varies between 1 VDC and 10 VDC, the boiler target temperature varies linearly between 50°F (10°C) and 220°F (104°C) (refer to Table O). If a voltage below 0.5 VDC is received, the boiler target temperature is displayed as “– – –” indicating that there is no longer an internal call for heat. A 0-20 mA signal can be converted to a 0-10 VDC signal by installing a 500 Ω resistor on the external input signal device’s terminals.

2-10VDC or 4-20 mA external input signal – When the 2-10VDC signal is selected, an input voltage of 2 VDC corresponds to a boiler target temperature of 50°F (10°C). An input voltage of 10 VDC corresponds to a boiler target temperature of 220°F (104°C). As the voltage varies between 2 VDC and 10 VDC, the boiler target temperature varies linearly between 50°F (10°C) and 220°F (104°C) (refer to Table P). If a voltage below 1.5 VDC is received, the boiler target temperature is displayed as “– – –” indicating that there is no longer an internal call for heat. A 4-20 mA signal can be converted to a 2-10 VDC signal by

FP - Flame proof warning.

MODE - Operating mode of the heater.

OFFSET - The Offset setting allows the boiler target

temperature to be fine tuned to the external input signal. The control reads the external input signal and converts this to a boiler target temperature. The Offset setting is then added to the boiler target temperature.

OUTDR - Outdoor air temperature.

OUTDR DESIGN - Design outdoor air temperature

used in the heat loss calculation.

OUTDR START - Starting outdoor air temperature.

PUMP DLY - Sets the operating time of the pump once

the CFH is satisfied.

TANK - Current DHW tank temperature (Mode 3).

TANK DIFF - Storage tank differential (Mode 3).

TANK TARGET - Target temperature in the DHW

storage tank (Mode 3).

Modulating Control

Item

DHW

Modulation

External Input Signal

Offset

ank

tem Field

umber Field

ype

ault Description

0 E

1 F

2 BOIL OUT SHr Error Boiler outlet sensor short

3 BOIL OUT OPn Error Boiler outlet sensor open

4 BOIL IN SHr Error Boiler inlet sensor short

5 BOIL IN OPn Error Boiler inlet sensor open

6 SUP SHr Error System sensor short

7 SUP OPn Error System sensor open

8 OUTDR SHr Error Outdoor sensor short

9 OUTDR OPn Error Outdoor sensor open

10 DHW SHr Error DHW sensor short

11 DHW OPn Error DHW sensor open

Table T: Error Codes

UNITS - Selects the temperature units to be displayed

(°F or °C).

WWSD - Selects the outdoor temperature that shuts the heater off, no matter what the demand. NOTE: The WWSD segment will be displayed on the LCD.

Operation

The Raypak electronic temperature control uses a Liquid Crystal Display (LCD) as a method of supplying information. The LCD is used to setup and monitor system operation by means of three push buttons (Item, L and M) shown at the bottom of Fig. 37.

All items displayed by the control are organized into two menus, the view menu and the adjust menu. The active menu is displayed in the upper right hand side of the display in the menu field. The default menu is the view menu.

When the temperature control is powered up, the control turns on all segments in the display for 2 seconds, then the software version is displayed for 2 seconds. At the end of that 4 second period, the control enters the normal operating mode and “VIEW” is displayed. Pressing the scroll button “scrolls” through the displayed values in the “VIEW” menu.

To make an adjustment to a setting in the control, begin by selecting the “ADJUST” menu. To change from the view menu to the adjust menu, simultaneously press and hold all three buttons for 1 second. The

Item Field

Displays an abbreviated name of the selected item

Buttons

Selects Menus, Items and adjusts settings

Fig. 37: Modulating Temperature Control Display

{

arning

rror

EPROM error

lame proof warning

Menu Field

Displays the current menu

Number Field

Displays the current value of the selected item

Status Field

Displays the current status of the control’s inputs, outputs and operation

menu name, “ADJUST” will be displayed in the menu field.

The menu will automatically revert back to the view menu after 20 seconds of keyboard inactivity. Then scroll to the desired item using the scroll button. Finally, use the L or M button to make the adjustment. In the absence of other information, the values provided in Tables Q, R and S should be used as default settings.

Heater Sequence of Operation

Code Condition

On System OK; No faults present

Off Possible control fault; Check power

1 Flash Low air

2 Flashes

Flame in combustion chamber;

No call for heat

3 Flashes Ignition lockout

4 Flashes Low HSI current

5 Flashes Low 24 VAC

6 Flashes Internal fault; Replace control

If all limits are satisfied and there is a call for heat:

1. The heater pump is powered and begins circulatng water through the heat exchanger.

2. The blower is powered and goes through a 15 sec-

ond prepurge beginning when air flow is proven by closure of the blower suction air pressure switch.

3. The igniter is powered, and once proven, heats up

for 20 seconds.

4. The gas valve is then energized for a 4 second

trial for ignition period. Trial for ignition is fixed at 50% input. The heater is allowed to modulate once flame is proven and the firing rate will adjust to match the load based on the configuration and settings of the temperature control or external input.

5. Once the heat demand is satisfied the gas valve

will close and the blower will run a 30 second post purge. The heater pump will continue to circulate water for 0 to 10 minutes depending on the pump delay setting on the Raypak modulating temperature control.

The optional single-try ignition module will lock out after failing to light one time. To reset it, press and release the small, recessed black push button located

nside of the cut-out on the lower right-hand corner of

i the ignition module case. Turning off the power to

he heater WILL NOT reset the ignition module.

Table U: Ignition Module

Diagnostic LED Flash Codes

High Limit—Manual Reset

Ignition Module

When additional heat is needed, the combustion air blower starts to purge air from the combustion chamber for 15 seconds. On proof-of-air flow, the air-proving switch closes and the igniter is energized. To ensure safe operation, the gas valve cannot open until the igniter is verified. The main burner is automatically lit when the device is powered and pre-purged. The heater performs its own safety check and opens the main valve only after the igniter is proven to be capable of ignition. The standard ignition module will attempt to light three times before locking out. To reset it, turn off power to the heater, wait 30 seconds and reapply power.

This heater is equipped with a fixed setting manual reset high limit temperature device as standard or it may have an optional adjustable setting manual reset high temperature device.

The fixed setting manual reset high limit is located on the In/Out header of the heat exchanger on the right side of the heater (accessible through the front door for reset as necessary).

The optional adjustable manual reset high limit is located inside the heater junction box. Push the reset button and adjust the setting to approx. 40°F (20°C) above desired outlet temperature.

Fig. 38: Ignition Module

Fig. 39: High Limit (Manual Reset)

High Limit—Auto Reset (Optional)

Modulating Temperature Control

This heater may be equipped with an optional adjust-

ble auto reset high limit temperature device.

The optional adjustable auto reset high limit is located inside the heater junction box. Adjust the setting to approx. 20°F (10°C) above desired outlet temperature.

This heater is equipped with a Raypak modulating

emperature control. Refer to information starting on

t page 30 for information on the setting and use of this control.

Fig. 42: Modulating Temperature Control

Low Water Cut-Off (Optional)

Fig. 40: Adjustable High Limit (Auto Reset)

Flow Switch

This standard, dual-purpose control, mounted and wired in series with the main gas valve, shuts off heater in case of pump failure or low water flow.

Fig. 41: Flow Switch

The optional low water cut-off automatically shuts down the burner whenever water level drops below the level of the sensing probe. A 5-second time delay prevents premature lockout due to temporary conditions such as power fluctuations or air pockets.

Fig. 43: Low Water Cut-Off

High & Low Gas Pressure Switches (Optional)

The optional low gas pressure switch connection mounts upstream of the gas valve (on the inlet flange to the gas valve) and is accessible through the removable access panels on the rear of the heater to reset the gas pressure switch, as necessary. It is used to ensure that sufficient gas pressure is present for prop-

er valve/regulator performance. The low gas pressure switch automatically shuts down the heater if gas sup-

ly drops below the factory setting of 3.0 in. WC for

p natural gas or propane gas.

The optional high gas pressure switch connection mounts down-stream of the gas valve. Special ports are located on the backside of the gas valve and accessible from the front of the heater (to reset the gas pressure switch) or through the removable access panels on the rear of the heater (to reset the gas pressure switch), as necessary. If the gas pressure regulator in the valve fails, the high gas pressure switch automatically shuts down the burner.

Operation of either the High or Low Gas Pressure Switch will turn on an LED inside the switch housing. Push the top of the plastic switch housing as shown in Fig. 44 to reset a tripped pressure switch. The white LED will go out when the switch is reset.

Blocked Vent Switch

This heater is equipped with a blocked vent pressure

witch to prevent the operation of the heater when too

s much of the vent is blocked. This switch is located on the right side of the heater near the right rear corner.

Fig. 46: Blocked Vent Switch

Fig. 44: High/Low Gas Pressure Switch

Air Pressure Switch

This heater is equipped with an air pressure switch to prove the operation of the blower before allowing the ignition control to begin a Call for Heat. It is located on the right side of the lower flange of the blower mounting assembly, directly behind the junction box.

UDB Diagnostic Board

This heater is equipped with a diagnostic board which will indicate faults as they occur. Refer to the Troubleshooting section for instructions on accessing, reviewing and clearing these faults.

Fig. 47: UDB Diagnostic Board

Fig. 45: Air Pressure Switch

NOTE: The wiring diagrams in this manual show all standard options. Refer to the large wiring diagram provided with your heater for options installed on your specific unit(s).

WIRING DIAGRAM - Models H & WH

WIRING DIAGRAM - Models P & WHP

START-UP

NOTE: The following steps must be performed by a

factory-trained technician.

Pre Start-up

Filling System (Heating Boilers)

Fill system with water. Purge all air from the system. Lower system pressure. Open valves for normal system operation, and fill system through feed pressure. Manually open air vent on the compression tank until water appears, then close vent.

Air Purge (Domestic Hot Water Heaters)

Purge all air from system before heater operation. This can be normally accomplished by opening a downstream valve.

Raypak offers an optional air vent valve for the MVB heaters which can be installed directly into the inlet side of the header to ensure that air is purged from the system. This option also includes an adapter to allow the air vent to be piped (in the field) to a suitable drain as re-quired by the jurisdiction having authority.

CAUTION: An air vent valve should be installed at the highest point in the system for proper operation. If water piping is located higher than the header, the air vent valve should be relocated to the highest point in the installed system.

EFORE OPERATING, smell all around the appliance

B area for gas. Be sure to smell near the floor because some gas is heavier than air and will settle on the floor.

HAT TO DO IF YOU SMELL GAS:

Do not try to light any appliance.

•

• Do not touch any electrical switch; do not use any telephone in your building.

• Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

• Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not turn by hand, do not try to repair it, call a qualified service technician. Forced or attempted repair may result in a fire or explosion.

• Do not use this appliance if any part has been under water, immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

• Check around unit for debris and remove combustible products, i.e. gasoline, etc.

Pre Start-up Check

1. Verify the heater is filled with water.

2. Check system piping for leaks. If found, repair immediately.

3. Vent air from system. Air in system can interfere with water circulation.

4. Purge air from gas line to heater.

Venting System Inspection

1. Check all vent pipe connections and flue pipe material.

2. Make sure vent terminations are installed per code and are clear of all debris or blockage.

For Your Safety

WARNING: If you do not follow these instructions

exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

This appliance has a hot surface igniter. It is equipped with an ignition device which automatically lights the burners. Do not try to light the burners by hand.

Initial Start-up

Required tools

• (1) 12-0-12 (24” scale) U-tube manometer

• (2) 6-0-6 (12” scale) U-tube manometer

• Screwdrivers (assorted sizes and shapes)

• (1) Crescent wrench (8” or 10”)

• (1) Multi-meter

• (1) Amp probe

(Metric Allen wrenches will be required for servicing the gas valve, but not during start-up)

NOTE: Digital manometers are not recommended.

Preparation

WARNING: Do not turn on gas at this time.

heck Power Supply

GAS

TO BURNER

ith multi-meter at incoming power, check voltage

W between:

Hot - Common (≈120 VAC)

Hot - Ground (≈120 VAC)

Common - Ground (< 1 VAC)

WARNING: If Common - Ground is > 1 VAC, STOP: Contact electrician to correct ground failure. Failure to do this may burn out 120V-24V transformer, or may cause other safety control damage or failure.

Attach Manometers to Measure Pressures

1. Turn off main gas valve.

2. Attach (1) 12” scale manometer to an upstream bleedle valve on the gas supply pipe to the heater (Measure point “A” in Fig. 48).

3. Attach (1) 24” scale manometer to the manifold pressure tap located on the elbow downstream of the valve (Measure point “D” in Fig. 48).

4. Attach (1) 12” scale manometer near the fan-proving switch. Pull black cap from air pressure switch tee and connect the manometer. NOTE: Retain caps for reinstallation later.

3. If the gas pressure is greater than 14.0 in. WC, turn off the main gas shut-off valve, upstream of the heater.

Start-Up

NOTE: The values in Tables V, W and X represent

the conditions when the heater is at full firing rate at sea level.

NOTE: Pressure and combustion data are provided with the heater.

1. Turn power on.

2. Turn on the heater, wait approximately 15 seconds after the blower starts, and the igniter should start to glow (observable through the observation port located at the front, bottom of the heater). Look into the sight glass located at the bottom of the front panel to check igniter operation. Gas valve should open in 45-60 seconds.

3. The heater ignites at 50% of full rate (as indicated on the LCD display of the temperature control located in the upper right of the front panel).

4. If the burner fails to light on the first trial, it will try for ignition up to three times before going into lockout with the standard ignition module. If the heater is equipped with the optional single-try ignition module, it will go into lockout.

5. Wait until the controller indicates 100% on the firing rate display screen (approximately 30 seconds).

Fig. 48: Gas Pressure Measurement Locations

Check Gas Supply Pressure

1. Slowly turn on main gas shut-off valve.

2. Read the gas supply pressure from the manometer; minimum supply pressure for natural gas is 4.0 in. WC, recommended supply is 7.0 in. WC, minimum supply pressure for propane gas is 4.0 in. WC, recommended supply is 11.0 in. WC (dynamic readings, full fire input).

Blower Check

1. Check blower suction using the manometer attached to the fan pressure switch tee, with the heater firing at 100% input. The reading should be as noted in Table V for both natural and propane gas.

2. FOR REFERENCE ONLY: Measure the blower amp draw with the heater firing at 100% input and compare the measured value to the values in Table U. The amp draw is measured with a clampon type amp probe clamped to the 14 AWG black power wire going into the blower.

3. When firing at 100%, the desired heater combustion CO2 is between 8.5 and 9.0% for natural gas and 9.5 and 10.0% for propane with CO less than 100 ppm. If this combustion cannot be achieved

ith the blower suction within the tolerances spec-

w ified in Table T, contact the factory. The reference amp draw reading may help to indicate if there is a problem with the system or if blower adjustment

s required.

CAUTION: Special manifold and air settings may be required.

Finishing

NOTE: Most commercially available amp probes

are not accurate enough and/or are not shielded well enough to read accurately in the heater environment. Blower amp draw readings are for reference only.

Manifold Check

1. Check manifold gas pressure at the gas valve outlet pressure tap (connection “D” in Fig. 48). This pressure should read per the values in Table X for natural and propane gas.

2. If the pressure reading differs by more than ± 0.2 in. WC, STOP – Call the factory for directions

on what to do next!

Model No.

504 -2.3 ± 0.2 in. WC

754 -2.9 ± 0.2 in. WC 1104 -4.0 ± 0.2 in. WC 1504 -4.0 ± 0.2 in. WC 2004 -4.1 ± 0.2 in. WC

Air Pressure

Setting (in. WC)

Setting

Tolerance

. Record all data on the “Start-up Checklist” located

at the back of this manual.

2. Disconnect the manometers and reconnect the cap on the fan pressure switch tee and reinsert the sealing screws into the bleedle valves.

3. Start-up is complete and the heater should be operating properly.

Safety Inspection

1. Check all thermostats and high limit settings.

2. During the following safety checks leave manometers hooked up, check and record.

3. If other gas-fired appliances in the room are on the same gas main, check all pressures on the MVB with all other equipment running.

4. Check thermostats for ON-OFF operation.

5. Check high limits for ON-OFF operation.

6. While in operation, check flow switch operation.

Table V: MVB Air Pressure Settings

Model No. Amp Draw

504 1.9 +0.0/-0.2 754 2.9 +0.0/-0.2

1104 5.5 +0.0/-0.2 1504 8.1 +0.0/-0.2 2004 13.0 +0.0/-0.5

Table W: MVB Amp Draw (Reference Only)

Manifold Gas Pressure Setting

Model No.

504 -0.1 -0.1

754 -0.4 -0.1

1104 -1.0 -0.2

1504 -2.4 -0.6

2004 -1.0 -0.5

Table X: MVB Manifold Pressure Settings

High Fire Values (in. WC)

Natural Gas Propane Gas

Setting

Tolerance

7. Check the low gas pressure switch (if provided). (For proper adjustment, use the attached manometers, if available, to set pressure. The scales on the switch are approximate only.) Low gas pressure switch (if provided) must be set at

3.0 in. WC for natural gas and propane gas.

8. Make sure that the high gas pressure switch (optional) is set to 3.0 in. WC for both natural gas and propane gas.

Follow-Up

Safety checks must be recorded as performed. Turn heater on. After main burner ignition:

1. Check manometer for proper readings.

2. Cycle heater several times and re-check readings.

3. Remove all manometers and replace caps and screws.

4. Check for gas leaks one more time.

Leak Test Procedure: Dual-Seat Gas

GAS

TO BURNER

Valve

roper leak testing requires three pressure test points

P in the gas train.

Remove the access panel on the rear of the heater to access the gas valve for this test. Test point A is a bleedle valve located upstream of the combination gas valve on the supply manifold.

Test point B is a bleedle valve located between the two automatic gas valve seats.

Test point C is a bleedle valve located downstream of both automatic gas valve seats and upstream of the manual valve. Refer to Fig. 49.

These tests are to be conducted with the electrical power to the heater turned OFF.

1. Manually close the downstream leak test valve.

2. Open the bleedle valve at test point A and connect a manometer to it. Verify that there is gas pressure and that it is within the proper range (NOTE: must not exceed 14.0 in. WC).

. After no leakage has been verified at all valve

seats and test valves, open downstream leak test valve and restore electrical power to the heater.

3. Open test point B and connect a rubber tube to it. Connect the other end of the tube to a manometer and look for a build-up of pressure. Increasing pressure indicates a leaking gas valve which must be replaced.

4. Next, close the upstream manual gas valve (field supplied) and remove the manometers from the bleedle valves in test point A and test point B. Connect a rubber tube from the test point A bleedle valve to the test point B bleedle valve and open the upstream manual gas valve. Make sure that test point A & B bleedle valves have been opened so as to allow gas to flow. This will bring gas pressure to the second valve seat.

5. Open the bleedle valve at test point C and connect a second rubber tube to it. Connect the other end of the tube to a manometer and look for a build-up of pressure. Increasing pressure indicates a leaking gas valve which must be replaced.

6. Remove rubber tube and manometers. Close each test point bleedle valve as the tubes are removed.

Fig. 49: Leak Test Procedure

Post Start-Up Check

Check off steps as completed:

1. Verify that the heater and heat distribution units or storage tank are filled with water.

2. Confirm that the automatic air vent (if used) was opened two full turns during the venting procedure.

3. Verify that air has been purged from the system.

4. Verify that air has been purged from the gas piping, and that the piping has been checked for leaks.

5. Confirm that the proper start-up procedures were followed.

6. Inspect burner to verify flame.

7. Test safety controls: If heater is equipped with a low water cut-off or additional safety controls, test

or operation as outlined by manufacturer. Burner

f should be operating and should go off when controls are tested. When safety devices are restored, burners should re-ignite after pre-purge time

elay.

OPERATION

Lighting Instructions

. Test limit control: While burner is operating, move

indicator on high limit control below actual water temperature. Burner should go off while blower and circulator continue to operate. Raise setting on limit control above water temperature and burner should re-ignite after pre-purge time delay.

NOTE: Ignition control may have to be reset after this portion of the test.

9. Test ignition system safety device:

a. Open manual gas valve. Turn power on.

b. Set thermostat to call for heat.

c. When the heater is in operation, pull hose off

the air switch. The burner should go off almost immediately.

d. Reattach hoses. Burner should re-ignite after

pre-purge time delay. NOTE: Ignition control

may have to be reset after this portion of the test.

10. To restart system, follow lighting instructions in the Operation section.

11. Check to see that the high limit control is set above the design temperature requirements of the system. For multiple zones: Check to make sure the flow is adjusted as required in each zone.

12. Check that the heater is cycled with the thermostat. Raise the setting on the thermostat to the highest setting and verify that the heater goes through the normal start-up cycle. Reduce to the lowest setting and verify that the heater goes off.

13. Observe several operating cycles for proper operation.

. Before operation, make sure you have read all of

the safety information in this manual.

2. Remove upper front panel.

3. Set the thermostat to the lowest setting.

4. Turn off all electrical power to the appliance.

5. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

6. Turn on main manual gas valve field installed near gas inlet connection on back of heater.

7. Wait 5 minutes to clear out any gas. Then smell for gas, especially near the floor. If you then smell gas, STOP! Follow the steps in the safety information on the front cover of this manual. If you do not smell gas, go to next step.

8. Turn on all electrical power to the appliance.

9. Set thermostat to desired setting. The appliance will operate. The igniter will glow after the prepurge time delay (15 seconds). After igniter reaches temperature (30 seconds) the main valve should open. System will try for ignition up to three times (one time on optional single-try ignition module). If flame is not sensed, lockout will commence.

10. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance,” and call your service technician or gas supplier.

11. Replace upper front panel.

12. If heater fails to start, verify the following:

14. Set the heater thermostat to desired temperature.

15. Review all instructions shipped with this heater with owner or maintenance person, return to envelope and give to owner or place the instructions inside front panel on heater.

a. There are no loose connections or that the

service switch is off.

b. High temperature limit switch is set above wa-

ter temperature or manual reset high limit is not tripped.

c. Thermostat is set above water temperature.

. Gas is on at the meter and the heater.

d e. Incoming dynamic gas pressure to the gas

valve is NOT less than 4.0 in. WC for natural gas or propane gas.

To Turn Off Gas To Appliance

1. Shut off manual gas valve field installed near gas inlet connection on back of heater.

2. Remove upper front panel.

3. Set the thermostat to lowest setting.

UDB Fault History

To view the fault codes in the UDB history file:

1. Press the UP or DOWN buttons on the membrane

witch for 2 seconds to access the fault history.

2. Press either button to scroll through the recorded faults in history.

3. The most recent fault recorded will be the first fault displayed (the last 16 faults are stored in the history, on a rolling basis). There is no time or date stamp associated with these faults.

4. Turn off all electrical power to the appliance if service is to be performed.

5. Replace access panel.

4. When the history of faults has been exhausted,

pushing the UP or DOWN buttons again will roll the fault history over and it will start again.

5. To exit the fault history, wait for 10 seconds and the board will automatically exit the history mode.

To clear the fault history, press and hold both the UP and DOWN buttons for 5 seconds while the power is on.

NOTE: Once the history has been cleared, it cannot be recovered.

Diagnostic information is provided any time a fault is recorded. This information is intended to assist in locating the problem with the heater, but is not exhaustive.

If multiple fault conditions occur at the same time, only the fault that caused the heater to shut down will be recorded in the history.

TROUBLESHOOTING

Ste p8

Ste p7

Ste p6

Ste p9

Step 1

Step 2

Step 3

Step 4

Step 5

Is there a Call For

Heat?

Is Disable connection intact?

Does the combustion air

blower come on?

Is 4-20mA present at the quick

disconnects on the black and blue

wires of the tem

erature controlle r?

Is 24VAC at the NC side of

the air pressure switch?

Does F2 on ignition module

have AC

owe r?

Is blower pressure setting

(vacuum) correct?

Does igniter prove?

Is air switch bouncing?

Call our Technical Service Department

Is gas pressure correct?

Is there continuity in the wire

between F2 and Pin J5-6?

Replace air pressure switch.

Correct the shutter

setting or blower

amp draw.

Check the switch and/or

line voltage

YES

Does the power switch provide

power to the control panel?

Unit is in standby mode.

Reattach.

YES

Is diagnostic board

indicating open

Check and correct power

connections at main terminal

block, circuit breaker panel or

blower relay.

YES

Is 24VAC at PS on ignition module?

Is connecting plug secure?

YES

Is the flame sensor signal to the

nition modulegreater than 1 uA DC?

YES

The unit is oka

YES

Replace HSI

Correct the gas pressure.

Repair or

lace wire.

Correct wiring.

YES

Is Amp draw during heat-

up for HSI greater than

3.1 Amps?

YES

Is there 120VAC at the blower or

blower relay?

Is the unit runnin g?

Is static and dynamic inlet gas

pressure correct?

YES

Replace temperature

controller.

Correct Safet

YES

1-805-278-5300

MAINTENANCE

Suggested Minimum Maintenance Schedule

Regular service by a qualified service agency and maintenance must be performed to ensure maximum operating efficiency.

y local codes.

3. Check that area is free from combustible materials, gasoline, and other flammable vapors and

iquids.

. Check air filter and replace as necessary.

5. Follow pre-start-up check in the Start-up section.

Maintenance as outlined below may be performed by the owner.

Daily

1. Check that the area where the heater is installed is free from combustible materials, gasoline, and other flammable vapors and liquids.

2. Check for and remove any obstruction to the flow of combustion or ventilation air to heater.

Monthly

1. Check for piping leaks around pumps, mixing valves, relief valves, and other fittings. If found, repair at once. DO NOT use petroleum-based stop-leak compounds.

2. Visually inspect burner flame.

3. Visually inspect venting system for proper function, deterioration or leakage.

4. Visually inspect for proper operation of the condensate drain in the venting. If leaks are observed repair at once.

5. Check air vents for leakage.

6. Visually inspect burner flame. It should be light blue at full input. Remove and visually inspect hot surface igniter and sensor for damage, cracking or debris build-up.

7. Check operation of safety devices. Refer to manufacturers’ instructions.

8. Follow oil-lubricating instructions on pump (if required). Over-oiling will damage pump. Water-lubricated circulators do not need oiling.

9. To avoid potential of severe burn, DO NOT REST HANDS ON OR GRASP PIPES. Use a light touch; return piping will heat up quickly.

10. Check blower and blower motor.

11. Check for piping leaks around pumps, relief valves and other fittings. Repair, if found. DO NOT use petroleum-based stop-leak.

Periodically

1. Check relief valve. Refer to manufacturer’s instructions on valve.

2. Test low water cut-off (if equipped). Refer to manufacturer’s instructions.

Yearly (Beginning Of Each Heating Season)

Schedule annual service call by qualified service agency.

1. Visually check top of vent for soot. Call service person to clean. Some sediment at bottom of vent is normal.

2. Visually inspect venting system for proper function, deterioration or leakage. Ensure that condensate drain is inspected and ensure that condensate is being directed to appropriate condensate management system or drain, as required

Preventive Maintenance Schedule

The following procedures are recommended and are good practice for all MVB installations.

Daily

1. Check gauges, monitors and indicators.

2. Check instrument and equipment settings. (See “Post Start-Up Check” on page 45.)

3. Check burner flame. (Should see light blue flame at full input rate).

Weekly

For low-pressure heaters, test low-water cut-off device. (With heater in pre-purge, depress the low water cut-off test button. Appliance should shut-off and ignition fault light should come on. Depress reset button on front of heater control panel to reset).

. Perform leakage test on gas valves (See Fig. 49.)

and procedure on page 45.

7. Test air switch in accordance with manufacturer’s nstructions. (Turn panel switch to the “On” posi-

i tion until blower is proven, then turn the switch to

Off.”

“

Monthly

1. Check flue, vent, stack, or outlet dampers.

2. Test blower air pressure. (See “Blower Check” on page 43.)

3. Test high and low gas pressure interlocks (if equipped). (See “Safety Inspection” on page 44.)

Semi-Annually

1. Recalibrate all indicating and recording gauges.

2. Check flame failure detection system components.

3. Check firing rate control by checking the manifold pressure. (See “Manifold Check” on page 44.)

4. Check piping and wiring of all interlocks and shutoff valves.

5. Check air filter and replace as necessary.

Annually

8. Inspect and clean burner using shop air.

As Required

1. Recondition or replace low water cut-off device (if equipped).

2. Check drip leg and gas strainers.

3. Check flame failure detection system. (See “Post Start-Up Check,” page 45.)

4. Check igniter. (Resistance reading should be 4270 ohms at ambient temperature).

5. Check flame signal strength. (Flame signal should be greater than 1 microampere as measured at the 2 pins on the upper left corner of the ignition control).

6. Check firing rate control by checking the manifold pressure. (See “Manifold Check” on page 44).

7. Test safety/safety relief valves in accordance with ASME Heater and Pressure Vessel Code Section IV.

1. Test flame failure detection system and pilot turndown.

2. Test high limit and operating temperature. (See “Post Start-Up Check,” page 45.)

3. Check flame sensor.

4. Conduct a combustion test at full fire. Carbon diox-

ide should be 8.5 to 9.0% at full fire for natural gas, and between 9.5 to 10.0% for propane gas. Carbon monoxide should be < 100 ppm.

5. Check valve coil for 60 cycle hum or buzz. Check

for leaks at all valve fittings using a soapy water solution (while heater is operating). Test other operating parts of all safety shut-off and control valves and increase or decrease settings (depending on the type of control) until the safety circuit opens. Reset to original setting after each device is tested.

Filter Maintenance

NOTE: Use Raypak replacement filters, kit number

012552F (12”X12”) for models 504-1104 and kit number 012553F (16”X16”) for models 1504-2004.

• Inspect quarterly

• Replace when tracking pressure exceeds -0.5 in. WC at 100% fan speed, except for models 1104 and 2004, which need to be replaced when tracking pressure exceeds -0.7 in. WC at 100% fan speed.

Filter Replacement

1. Remove the filter box cover by loosening and removing the two wing nuts holding it in place.

tainless steel, which is commonly used in high effi-

s ciency systems. The heater can be supplied with corrosion-resistant, non-metallic intake air vent material. You may, however, choose to use outside

ombustion air for one or more of these reasons:

. Installation is in an area containing contaminants

listed below which will induce acidic condensation.

2. You want to reduce infiltration into your building through openings around windows and doors.

3. You are using AL29-4C stainless steel vent pipe, which is more corrosion-resistant than standard metallic vent pipe. In extremely contaminated areas, this may also experience deterioration.

Products causing contaminated combustion air:

Fig. 50: Remove the Air Filter Box Cover

2. Remove the filter by lifting it straight up and out of the slot in the filter box.

Fig. 51: Remove the Air Filter

3. Reverse steps 1 and 2 to install the new filter. Use Raypak replacement filters, kit number 012552F (12”X12”) for models 504-1104 and kit number 012553F (16”X16”) for models 1504-2004.

APPENDIX

Inside Air Contamination

All heaters experience some condensation during start-up. The condensate from flue gas is acidic. Combustion air can be contaminated by certain vapors in the air which raise the acidity of the condensate. Higher acidity levels attack many materials including

• spray cans containing chloro/fluorocarbons

• permanent wave solutions

• chlorinated waxes/cleaners

• chlorine-based swimming pool chemicals

• calcium chloride used for thawing

• sodium chloride used for water softening

• refrigerant leaks

• paint or varnish removers

• hydrochloric acid/muriatic acid

• cements and glues

• antistatic fabric softeners used in clothes dryers

• chloride-type bleaches, detergents, and cleaning solvents found in household laundry rooms

• adhesives used to fasten building products

• similar products

Areas where contaminated combustion air commonly exists:

• dry cleaning/laundry areas

• metal fabrication plants

• beauty shops

• refrigeration repair shops

• photo processing plants

• auto body shops

• plastic manufacturing plants

• furniture refinishing areas and establishments

• new building construction

• remodeling areas

• open pit skimmers

Check for areas and products listed above before installing heater. If found:

• remove products permanently, OR

• install TruSeal direct vent.

Important Instructions for the Commonwealth of Massachusetts

The Commonwealth of Massachusetts requires compliance with regulation 248 CMR 4.00 and 5.00 for installation of

hrough – the – wall vented gas appliances as follows:

(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors

a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.

b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR

5.08(2)(a)1 through 4.

(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:

1. The equipment listed in Chapter 10 entitled "Equipment Not Required To Be Vented" in the most current edition of NFPA 54 as adopted by the Board; and

2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.

(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:

1. Detailed instructions for the installation of the venting system design or the venting system components; and

2. A complete parts list for the venting system design or venting system.

(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies "special venting systems", the following requirements shall be satisfied by the manufacturer:

1. The referenced "special venting system" instructions shall be included with the appliance or equipment installation instructions; and

2. The "special venting systems" shall be Product Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.

(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.

GAS PRESSURE SUPERVISION

The Commonwealth of Massachusetts requires listed high and low gas pressure switches (manual reset) for any model with a maximum firing input greater than 1,000,000 Btu/Hr in accordance with 248 CMR 7.04(11)(d).

A gas pressure regulator (field supplied) is required in the gas train ahead of the heater, for heaters having input rates greater than 1,000,000 Btu/Hr, in accordance with 248 CMR

7.04 Figure 3B requirements.

LIMITED PARTS WARRANTY

MVB – TYPES H AND WH

MODELS 504-2004

SCOPE

aypak, Inc. (“Raypak”) warrants to the original owner that all parts of this heater which are actually manufactured by Raypak will be free

rom failure under normal use and service for the specified warranty periods and s ubject to the conditions set forth in this Wa rranty. Labor charges and other costs for par ts removal or reinstallation, shipping and transportati on are not covered by this Warranty but a re the o

wner’s responsibility.

HEAT EXCHANGER WARRANTY

Domestic Hot Water Five (5) years fr om date of heater installation. Includes copper heat exchanger w ith bronze waterways. T

en (10) years fr om date of heater installation. Includes only cupro-nickel heat exchanger with bronze waterways.

pace Heating (Closed Loop System) Ten (10) years fr om date of heater installation. Includes both cupro-nickel and c opper heat exchanger with bronze w ater-ways. Thermal Shock Warranty T

wenty (20) years from date of heater installation against “ Thermal Shock” (excluded, however, if caused by heater operation at large changes exceeding 150°F between the water temperature at intake and heat er temperature, or operating at heater temperatur es exc eeding 230°F).

ANY OTHER PART MANUFACTURED BY RAYPAK

ne (1) year warranty from date of heater installation, or eighteen (18) months from date of factory shipment based on Ray pak’s records,

whichever comes first.

SATISFACTORY PROOF OF INSTALLATION DATE, SUCH AS INSTALLER INVOICE, IS REQUIRED . THIS WARRANTY WILL BE V

OID IF THE HEATER RATING PLATE IS ALTERED OR REMOVED.

ADDITIONAL WARRANTY EXCLUSIONS

This warr anty does not c over failures or malfunctions resulting from:

1. Failure to properly install, operate or maintain t he heater in accordance with our pr inted instructions pr ovided;

2. Abuse, alteration, accident, fire, flood and the like;

3. Sediment or lime build-up, freezing, or other conditions causing inadequate water c irculation;

4. High velocity flow exceeding heater design rates;

5. Failure of connected systems devices, such as pump or controller;

6. Use of non-factory authorized accessories or other components in conjunction with the heater system;

7. Failing to eliminate air from, or replenish water in, the connected water system;

8. Chemic al cont amination of combustion air or use of chemical additives to water.

PARTS REPLACEMENT

Under this Warranty, Ray pak will furnish a replacement for any failed part. The failed part must first be returned to Raypak if requested, with transportation charges pr epaid, and all applicable warranty conditions found satisfied. The replacement part will be warranted for only the unexpired portion of the original warranty. Raypak makes no warranty whatsoever on parts not manufactured by it, but R aypak will apply any such warranty as may be provided to it by the parts manufacturer.

TO MAKE WARRANTY CLAIM

Promptly notify the original installer, supplying the model and serial numbers of the unit, date of installat ion and descriptio n of the problem. The installer must then notify his Raypak distributor for instructions regarding the claim. If either is not av ailable, co ntact Serv ice Manager, Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 or call (805) 278-5300. In all cases proper authorization must fir st be received from Raypak before replacement of any part.

EXCLUSIVE WARRANTY - LIMITATION OF LIABILITY

This is the only warranty given by Raypak. No one is authorized to make any other w arrant ies on Raypak’s behalf. THIS WARRANTY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. RAYPAK’S SOLE LIABILITY AND TH E SOLE REMEDY AGAINST RAYPAK WITH RESPECT TO DEFECTIVE PARTS SHALL BE AS PROV IDED IN THIS WARRANTY. IT IS AGREED THAT RAYPAK SHALL HAVE NO LIABILITY, WHETHER UNDER THIS WARRANTY, OR IN CONTRACT, TORT, NEGLIGENCE OR OTHERWISE, FOR ANY SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGE, INCLUDING DAMAGE FROM WATER LEAKAGE. Some states do not allow limitations on how long an impli ed warranty lasts, or for the exclusion of incidental or consequential damages. So the abov e limitation or exclusion may not apply to you.

This Limited Warranty gives you specific legal rights. You may als o have other rights which may vary fr om state to state. We su ggest that you complete the information below and retain this certificate in the event warranty service is needed. Reasonable proof of the effective date of the warranty (date of installation) must be presented, otherwise, the effective date w ill be based on the rate of manuf acture plus thirty (30) days.

Original Owner Model Number

Mailing Address Serial Number

Date of I nstallation

City State Zip Code Installation Site

Daytime Telephone Number Contractor/Insta ller

RAYPAK, INC 2151 E astman Avenue Oxnard, CA 93030-9786 (805) 278-5300 Fax (800) 872-9725 www.raypak.com

LIMITED PARTS WARRANTY

MVB – TYPES P & WHP

MODELS 504–2004

COPE

Raypak, Inc. (“Raypak”) warrants to the original owner that all par ts of this heater whic h are actually manufactured by Raypak will be free from failure under normal use and service for the specified warranty periods and subject to the conditions set forth in this Warranty. Labor charges and other costs for par ts removal or reinstallation, shipping and transportation are not covered by this Warranty but are the owner’s responsibility.

HEAT EXCHANGER WARRANTY

Five (5) years fr om date of heater installation. Includes cupo-nickel heat exchanger with bronze and cast iron waterways.

Thermal Shock Warranty Twenty (20) years from date of heater installation against “ Thermal Shock” (excluded, however, if caused by heater operation at large

changes exceeding 150°F between the water temperature at intake and heater temperature, or operating at heater temperatures exceeding 230°F).

ANY OTHER PART MANUFACTURED BY RAYPAK

One (1) Year warranty fr om date of heater installati on, or eighteen (18) months from date of factory shipment based on Ray pak’s records, whichever comes first.

SATISFACTORY PROOF OF INSTALLATION DATE, SUCH AS INSTALLER INVOICE, IS REQUIRED . THIS WARRANTY WILL BE VOID IF THE HEATER RATING PLATE IS ALTERED OR REMOVED.

DDITIONAL WARRANTY EXCLUSIONS

his warr anty does not c over failures or malfunctions resulting from:

1. Failure to properly install, operate or maintain the heater in accordance with our printed instructions provided;

2. Abus e, alteration, accident, fire, flood and the like;

3. Sediment or lime build-up, freezing, or other conditions causing inadequate water circulation;

4. High velocity flow exceeding heater design rates;

5. Failure of connected systems devices, such as pump or controller;

6. Use of non-factory authorized accessori es or ot her components in conjunction with the heater system;

7. Chemical contamination of combustion air or us e of chemical additives to w ater.

8. Misuse or neglect, including but not limited to freeze-ups, operating the heater w ith cabinet door off, having flow restrictions or obstr uc-

tions between the heater outlet and pool/spa or not maintaining pr oper chemical balance (pH level must be between 7. 2 and 7.8 and total alkalinity between 100 and 150 P PM. Total Dissolved Solids (TDS) must be no greater than 2500 PPM).

PARTS REPLACEMENT

Under this Warranty, Ray pak will furnish a replacement for any failed part. The failed part must first be returned to Raypak if requested, with transportation charges prepaid, and all applicable warranty conditions found satisfied. The replacement part will be warranted for only the unexpired portion of the original warranty. Raypak makes no warranty whatsoever on parts not manufactured by it, but Raypak will apply any such warranty as may be provided to it by the parts manufacturer.

TO MAKE WARRANTY CLAIM

Promptly notify the original installer, supplying the model and serial numbers of the unit, date of installat ion and description of the problem. The installer must then notify his Raypak distributor for instructions regarding the claim. If either is not av ailable, contact Service Manager, Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 or call (805) 278-5300. I n all cases proper authorization must first be received from Raypak before replacement of any part .

EXCLUSIVE WARRANTY - LIMITATION OF LIABILITY

This is the only warranty given by Raypak. No one is authorized to make any other w arrant ies on Raypak’s behalf. THIS WARRANTY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. RAYPAK’S SOLE LIABILITY AND TH E SOLE REMEDY AGAINST RAYPAK WITH RESPECT TO DEFECTIVE PARTS SHALL BE AS PROVIDED IN THIS WARRANTY. IT IS AGREED THAT RAYPAK SHALL HAVE NO LIABILITY, WHETHER UN DER THIS WARRANTY, OR IN CONTRACT, TORT, NEGLIGENCE OR OTHERWISE, FOR ANY SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGE, INCLUDING DAMAGE FROM WATER LEAKAGE. Some states do not allow limitations on how long an implied warranty lasts, or for the exclusion of incident al or consequential damages. So the above limitation or exclusion may not apply to you.

This Limited Warranty gives you specific legal rights. You may als o have other rights which may vary fr om state to state. We suggest that you complete the information below and retain this certificate in the event warranty service is needed. Reasonable proof of the effective date of the warranty (dat e of installation) must be presented, otherwise, the effective date will be based on the rate of manufacture plus thirty (30) days.

Original Owner Model Number

Mailing Address Serial Number

Date of Installation

City State Zip Code Installation Site

Daytime Telephone Number Contractor/Installer

RAYPAK, INC 2151 Eastman Avenue Oxnard, CA 93030-9786 (805) 278-5300 F ax (800) 872-9725 www.ray pak.com

START-UP CHECKLIST FOR FAN-ASSISTED

RAYPAK PRODUCTS

This start-up checklist is to be completely filled out by the service technician starting up the Raypak Boiler or Heater f

or the first time. All information may be used for warranty purposes and to ensure that the installation is correct.

Additionally this form will be used to record all equipment operation functions and required settings.

GAS SUPPLY DATA CLEARANCES

egulator Model & Size _________ / ______CFH Front Clearance _______________In.

Gas Line Size (in room) ________________In. NPT Right Side Clearance _______________In. Length of Gas Line ________________Eq Ft Left Side Clearance _______________In. Low Gas Pressure Setting ________________In. WC Rear Clearance _______________In. High Gas Pressure Setting ________________In. WC Overhead Clearance _______________In. Gas Shut-Off Valve Type ________________ ( Ball, Lube cock)

ELECTRICAL

Sediment Trap ________________Y/N Voltage Supply (VAC) No Load______ Load_____ Port _______Std______Full Voltage -24 VAC _______________VAC

Voltage Com to Ground _______________VAC

VISUAL INSPECTION OF COMPONENTS

Verify inspection was done and condition of components are in good working order with a “yes”

Hot Surface Igniter Auto High Limit Setting Manual Reset High Limit Setting

_______________Ohms _______________deg F

_______________deg F Wiring Harness _________________ Y/N Operating Control Setting _______________deg F Burner/s (flame) _________________ Y/N Refractory (visual) _________________ Y/N Sketch plumbing on reverse side Remote flame sense _________________ Y/N

WATER SUPPLY

Covers in place for outdoor _________________ Y/N Flow Rate in GPM or Delta T _______________If Avail

Measure flow rate at full fire

VENTING

Pump Economaster setting _______________Minutes

Vent Size: _____________ Stack Height:_______ Low Water Cutoff _______________Test Category: _________ sketch vent on reverse side *** Number of Tanks and Size Qty____ _______Gallons Vent Material: __________________ Plumbing Size _______________ Vent Termination Type: __________________ Pump Size: _________

(boiler) Pump HP: ______

Combustion Air Openings: Low __________ in2 Impeller trim____________ Pump Model___________ Ventilation air High __________ in2 Louvers __________________ Screens________________

EMISSIONS SETTINGS AND TEST INFORMATION

(AT FULL FIRE)

Nominal Factory Recommended Settings

Blower Pressure Setting _________________In. WC See manual or card tag Supply Gas Pressure Verify stable pressure static &

_________________In. WC dynamic condition

See manual or card tag

Pilot Gas Pressure _________________In. WC See manual or card tag Manifold Gas Pressure _________________In. WC See manual or card tag

The following measurements must be obtained with a Combustion Analyzer. NOX _________________PPM Less than 20 PPM (If required by Certifying Agency) Free Oxygen _________________% See manual CO _________________PPM Less than 150 PPM CO2 _________________% See manual

Model Number: ______________________________ Serial Number: _______________________________ *** Note: draw venting with details, such as extractors, barometric dampers, blast dampers or draft inducers

Site Altitude Above Sea Level __________________Ft.

Job Name _______________________________________________________________________________________

Address _________________________________________________________________________________________

Physical Location of Boiler: Indoors______; Outdoors______; Ground Level______; Roof______; Below Grade______

Mechanical Contractor / Installer _______________________________________________________________________

Date and Time of Start-up _____________Print Name and Signature of Start-up Technician_________________________

Information must be faxed to: (805) 278-5471 in order to ensure warranty consideration Attn: Service Manager

www.raypak.com

Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468

Litho in U.S.A.

Raypak MVB 5042004 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARNINGS

BEFORE INSTALLATION

Ratings and Certifications

Product Receipt

Model Identification

Component Locations